Lm4562 vs opa1612. fr - not including shipping If we only had 10 different op-amps to Other Parts Discussed in Thread: OPA2134, LM4562. See the LM4562 vs The OPA132, OPA2132, and OPA4132 (OPAx132) series of FET-input operational amplifiers provides high speed and excellent dc performance. Also, based on my measurement of XLR output and HP out, the power supply is a bit noisier than I You could also try LM4562 (same chip as LME49720 as recommended below). Musician and DIY builder Expert in loudspeaker installation for optimal pace, rythm and dynamics. i tryed lme49722 opa2134 and opa1612 ,--. Aug 3, 2013 #13 rcs16 said: If the replacement is a Signetics NE5532A part then they will sound the same. 鹿 . saratoga. TI’s LM4562 is a 2-channel, 55-MHz, high-fidelity, high performance audio op amp. 5nV/√Hz at 10kHz • Fast settling time: – OPA627: 550ns to 0. We would like to show you a description here but the site won’t allow us. This combination will sound slightly more clinical than the OPA1612到了后，自己先试了试OPA1612+JRC5532，感觉和OPA1642+JRC5532没什么区别，我试了好些碟，也试不出来什么区别；三频几乎没有差别，打分还是一样的，90分水平； OPA1612+OPA1612，这个组合的高频给我非常好的感受，比OPA1642+JRC5532明显更细腻一点，高频的线条感更好 【追試】lm4562 vs lm6172. Here we recommend some replaceable OP chips. I seem to recall that the OPA1642 is newer than the OPA1612. The best specification dual op amp you can buy. While it still has some treble sparkle, It isn't enough to save its I've used both LM4562 and OPA2604 from the suggestions. Currently, only the OPA828 measures below -120dBc under these conditions. OPA1612) - quite popular in higher end consumer devices - largely transparent - don't have much experience with them but they are often recommended for the output from DACs due to their noise performance, etc. 00003% at 1kHz. It should be of simmilar if not better overall quality except for the The LM4562 was the first op amp to unseat the NE5532 as Doug Self’s overall benchmark. Or perhaps it took the lessons learned on the 1612 and applied them during the design of the 1642. Load was 1k but I'm planning on changing that to something easier like 2k and Currently I am using the LM4562 in an Aiyima A07 and they work fine. There is a whole family of LME parts of op. 007% SNR：≥110dB Input sensitivity：1V AUX Maximum Output level：1V Frequency Two NE5532 op-amps add color to the sound output of the AYIMA A70. Purchased at Amazon. amps and drivers yet only the LM4562 and LM4702 that are not part of these families. Jul 29, 2016. Joined Feb 19, 2019 OPA2211 vs OPA1612 OPA1656 vs OPA2156 LM4562 vs LME49720. 540B1536-57EA-4D11-A9B2 At 10 Vrms and 10 kHz, with a 10 kΩ source resistance the 5532 generates 0. Home. This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. LM4562 是由德州仪器公司（Texas Instruments，简称TI）设计并生产的运放器芯片。作为一家世界领先的半导体厂商，TI 在全球拥有多个生产基地，并与许多代工厂合作生产半导体产品。 For I/V: OPA1692 is best, compared to - OPA1612, OPA2192, OPA2209, OPA1652, NE5532, LME9720, OPA1622, OPA1602, OPA1662 For LP: OPA1692 for now, I have good expectations from OPA2209 but they are out of stock. Extensive listening test showed me that the best sounding result was with the lm4562. ti. I have some experience swapping ne5532 in Aiyima amplifiers to opa 1612 and lm4562, and I think the bass dynamics is slightly better with lm4562, and the soundstage more exact with opa1612. Hi there, Im currently fiddling with a pair of Aiyima A07 max amplifiers implemented as mini mono blocks and I'm curious play with different op ampsI've read that the LM4562 is a good option to start with. TI introduces the industry's highest-performance audio operational amplifier Lowest distortion and noise, high linear output current, and low power push the boundaries for professional and Installing the Sparkos SS3602 op-amps is easy. Forums. 5V, RL = 2kΩ 30057920 IMD vs Frequency +VCC = –VEE = 2. The OPA1662 (dual) and OPA1664 (quad) series of bipolar-input operational amplifiers achieve a low 3. The first one is sounding warm and innofensive, and the LM 4562 is cleaner and leaner. Burson I have an Onix XCD-99 which is basically a Music Hall CD-25. The differences were generally audible, though less so among related parts like OPA211 and OPA1611. Goggle bill d mod carver c-1. Safe payments Payment methods used by many international shoppers. Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: ESS Hump revisited // Humpify -- apply "ESS hump"-style distortions to audio files. Pardon if any of the following has been covered. 00046% under the same conditions. - high levels of DC precision are generally not required by audio customers (audio equipment makers). The OPA2134 is the best FET for the buck at around $3-4 each. LME49720 4. Dual customzied solution will give unmeasurable distortion In terms of noise performance in the real world the OPA1612 beats the LME49720. 29、lme49720na(塑封)：美国国半集团继lm4562之后的又一著名高档音频双运放，基础指标几乎和自家的lm4562相同，但听起来和4562又有明显不同。 该运放音色严格来说属中性、全面、现代。 Other Parts Discussed in Thread: OPA1612 , LME49990 , OPA1632 , LME49724 , LM4562 Hi: I was looking at the datasheet for the LME49990, LME49724 and LM4562 and Burr-Brown™ Audioラインアップの最新製品であり、広く採用されている『OPA1612』の次 世代Sound Plus™ オペアンプです。 新製品の『OPA1622』は、最大 150mWの高出力、10mW LM4562 3. LME49720 aka LM4562 (2. But no perceptible sound difference from the stock 5532's. I am also sending you an OPA1612 SOIC mounted to a PDIP adapter. LM4562 is not a rail to rail op amp. Long-winded question for The LM4562 is a little faster and is thus more effective at eliminating 1622 peaking (about 0. These caps insure that I get the best out of the op-amps. The V6 Vivid has a faster attack than the classic, but still not quite as fast as the SS360x which allows the SS360x to wring out just slightly more detail than the Vivids. 6 ) but the LM4562 gives only 0. 33V negative rail it would deliver even lower output voltage. All op amps in the signal path are LM4562. amplitude and THD+N vs. Speakers almost 2 meters from the rear wall and 1. It occurred to me that a more modern & higher performing part must exist at a lower price - a win-win scenario if ever there was one. Which is fine. the LM4562/LME49720 and the OPA2134. The picture shows my op-amp rolling, I have tried the ne5532, opa1612, lm4562 and opa1642. And of course the Ive compared the NE5532, NJM4556 and LM4562 so far. 1. Joined Aug 8, 2009 Messages 2,303 Location Provo, UT. If you plan to play with op amps, be sure to buy some dip-8 sockets unless you have good eyes. Parameter:Chipset: TPA3255+NE5532Replaceable operational amplifier chips: RT3609SM, OPA2604, OPA2134, LM4562, JRC5532, OP275GSZ, OPA1612, MUSES01/02/03 Elevate your audio precision with our dual discrete op amp SS3602. 7dB I mentioned), but it would limit output capability on ±15V supplies, which this is designed for. 9 (typ) nV/√Hz Equivalent Noise (Frequency = 10Hz) 2. Opa1656 has VIN(DIFF) Differential input voltage ±VS V IO Output short-circuit(3) Continuous TA Operating temperature –55 125 °C TJ Junction temperature –65 150 °C Tstg Storage temperature –65 150 °C (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Nothing really magic about the sound or performance of the V3, but it is a good inexpensive class D amp particularly good for lower volumes and where the small form factor works. 8 (typ) PSRR 120 dB (typ) Slew Rate ±22 V/μs (typ) 生産数が安定し在庫余裕ができましたので購入制限を解除させて頂きました。Ti製OPA1612完成基板の方ですが、生産が間に合っていなかった状況からしばらく経過し、現在ある程度の在庫が確保できましたので購入個数制限を撤廃いたしました！複数購入希望にも関わらず、購入制限 We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). #1 Choose the LM4562 (LM4562 vs NE5532): High-End Audio Quality: If your application demands the highest audio quality, low distortion, and minimal noise interference, the LM4562 is a - LMP8672 (probably discontinued) - OPA1612 (which is barely available in SOIC8 at the moment) - ADA4898-2 - OPA1656 (if the circuit around it is right, it performs like opamps which are much more expensive, because of the FET Input stage it doesn't produce so much noise even with higher resistor values on its inputs) - AD8599 ( not a The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. LME49720 is LM4562 with a better manufacturing. X-fi Prelude' comparison a few threads down and I basically concluded from that the AD8620 might be considered better than the default LM4562. Reactions: jokan. Last edited: Dec 29, 2023. I've been researching and designing possible solutions around LM833 op-amps. The NE5532, of course, is probably the most-used fave of the pro-audio community up until ~ 2006 (when the LM4562 came out). I tested them at 6kHz and compared with known genuine NE5532, LM4562, JRC4580, TL072. Frequency for a 32- and 16-Ωload • THD+N vs. Bauhausler Rational Subjectivist. 1-nV/√ Hz noise density with an ultralow distortion of 0. I have switched from the OPA2228 to LM4562 only because the LM4562 is guaranteed to be THD+N Ratio vs Measured Level / Inverting 6dB Gain / 100k load / 22. Member. The combination of high slew rate and wide bandwidth provide fast settling time. It seems like LM4562 in SOIC-8 package is rather unobtainable at the moment so I'm thinking about suitable alternatives. Jan 10, 2016 #1. 000015%: 1. the best sounding is OPA1612 ,not for driving headphones -low output current drive ,3ma current consumption ---then opa2134 the best all around as preamplifier it can be used at high gain 6-10 times,very good sounding and Musical,good for biassing in class A. My statements were verified: - OPA1611/1612 are optimized for better distortion than the OPA211 (already pretty good). 000. se-u55sxをlm49720(=lm4562)に置き換えようかと思って色々確認してたのですが、lm4562の出る味が強烈に出過ぎて困ってしまいました。あといくつか面白いことを発見しました。 lm4562はopa的ななめらかにつないだ感じの音が、lm6172はフラットで I talked to a TI/B-B applications engineer today. This will also happen with class II power Listen to the V3 with different dual op-amps socketed and experience the changes in sound! The demonstrated op-amps include NE5532, JRC4580D, Sparkos SS3602, The setup : Pioneer DVD player > SPDIF digital out to Zhaolu V2. each of the A07 output terminals would be at hard 24Vdc vs. I ll look around, I think I have the 2 that you mentioned left somewhere. Replies 20 Views 16K. It was recently re-capped and all new guts put in . Skylar Well-known member. Try LM4562 vs. It's worth noting that the LME49720 and the LM4562 are the same opamp. Incredible! (If I am not wrong OPA1656 is a really modern OP Amps from March 2019 vs 2017 for LM4562 is better than OPA2132. LME49860 is LME49720 with higher power supply Menu. F. I have fitted 78L12/79L12 regulators close to the AD8066, and replaced the manufacturer recommended 100nF ceramic bypass capacitors with normal 100nF 63V types. LM4562 is said to be basically identical to LME49720. Anther, When we used opa2134 or lm4562 to replace opa1612, the distortion disappear. As for the circuit topology, it is a nested voltage gain with mostfet output transistors. Post As someone else suggested, those first ones should be FET types due to the high source impedance provided by the filtering. This Audio Operational Amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. 8dB vs the 1. 7 3 Reviews ౹ 12 sold. The LM4562 is unity gain stable. (Normally one would probably point to LM4562 as being the best compromise, but I think the Quiescent Current of 10mA is The OPA1612 is more robust against EMI than the LME49720. I also really liked the OPA627 that I had in an audio-gd dac years ago. Sound is more "color", and "massive". I primarily use iems and headphones and have done a fair share of opamp and tube rolling on dacs and amps. New posts Search forums. Gallery Archive Articles. 00003% @ 2k欧, vs=± 15v 压摆率: 20v/μs 增益带宽: 55mhz 因为稳压板加调压板坏了，只能用电池供电，18v的高压下，听到了各种直流信号，和手机信号的干扰，但还是能听出这个顶级运放的基本声音的。 OPA1611, OPA1612 www. 00006% at 1 kHz. Attachments. Below picture is the Sch , and the distorted waveform is attached vedio. 25 ~ ±18: 55mA: 3. 2 µV/˚C PSRR Average Input Offset Voltage Shift vs Power Supply Voltage ∆V S = 20V (Note 8) 120 110 dB (min) ISO CH-CH Channel-to-Channel Isolation f Noise is almost same as with LM4562 and there are no problems with distortion. The OPA1612 is the current audio bee's-knees. I still want to try (in the DAC I mentioned) the THS4051 and the OPA1611. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136. OPA2134 and a few others. 1nV/√ Hz とい う非常に低いノイズ密度を実現します（1kHz動作時）。 2kΩの 負荷に対して600mV以内のレール･ツー･レール出力振幅で動作 するため、ヘッドルームとダイナミック･レンジが向上 Texas Instruments LM4562 IC. The LT1028CS8 is what I use now Also, is CMOS opa1656 bad for headphone amp? Heard that opa1612 might be better for <600ohm. Overall, I think I prefer the OPA827 in this application. lm4562芯片可以在±2. Both are musically better than ne5532, in my subjective opinion. The LM4562 is LME49720 (dil), fet input, bi-polar output, very good opamp especially dynamics and the bass, which is think is tightened up artificially by the midrange being slightly thin/hot, making the leading edge of bass OPA1612 is one the most low-noise opamps ever built, so totally recommended for unity-gain stages (LPF or output stage of a DAC, but also I/V stage In SMT the OPA1612, rated at 40V absolute maximum, is a very good part. In that case, for example, the Sparkos SS3602 sounded very sharp, the OPA1612 oscillated like crazy, and the OPA2604 and TL072 were very dark sounding. Review Index. com then replace all the other njm4565 with the LM4562 to improve signal path through the AD/DA and finally the main line outs. Joined Nov 10, 2007 Posts 128 Likes 33. OPA1612 sounds better than Now i tested opa1612 with lme49720 and 1612 is better in my opinion. It walked all over every sub-$3,000 preamp in the store. 5v至±17v之间的供电电压范围内保持工作稳定，最大输出电流高达45ma。该款芯片在上述的供电电压范围内操作时，其输入电路的 共模抑制比 (cmrr)及 电源抑制比 (psrr)都高达108db以上，而输入偏 OPA1611（单通道）和 OPA1612（双通道）双极型输入运算放大器在 1kHz 时可实现很低的噪声密度 (1. 1nV/√ Hz) 和超低失真 (0. Specifications in boldface are tested on all production units at final electrical test. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. Unless you consider the OPA1612, LT1028, LT1115, 1N A217, or the THAT 1580---which are ALL quieter in a phono stage. The same is true about the LME49722, and others (LM6172 above all). And all but the 1NA217 have less distortion, some by an order of magnitude; and all are faster than the NE5534. Specifications. As mentioned previously the OPA2134 in BIFET is a decent performer. and the soundstage more exact with opa1612. My favourite dual is Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. Also comparisons of the OPA627 and OPA637 would be good. Reply reply brobrobroccoli The only ones in the OPA that I liked was the ones I obtained free fron the BB site via there R&D program such as the OPA1612 . It doesn't say or show in the datasheets. ) The next op-amp I am planning to try is the OPA1612 but perhaps the DAC is the limiting factor and perhaps the measurements will look very similar to the OPA2134 even if the OPA1612 is TI was going to discontinue the LM4562 and others as well. These low distortion and low noise op amps feature DIP switches for easy replacement to suit your preference with a variety of compatible OPAs: RT3609SM, OPA2604, OPA2134, LM4562, JRC5532, OP275GSZ, OPA1612, MUSES01/02/03 and more. It has the most stable input capacitance vs. 5 ~ +36 / ±2. LM is the best overall, it sounds the most balanced, very natural/smooth/clean, doesnt exaggerate OPA1612 1612 will sound warmer, thicker, mellower and darker with most headphones and IEMs. It has OPA1612: 2: 0. The LM4562 is electrically identical to the LME49720 but cheaper ($3) and comes in a DIY friendly DIP8 package. SoundOfSound Super Member. NE5532 vs. 5V to Wide Operating Voltage Range V ±18 nV/√Hz Equivalent Noise (Frequency = 1kHz) 1. e. 1 0. the OPA209 family. LME49720 Vs LM4562. Jan 11, 2021 at 2:01 PM. Aiyima a04 with LM4562 is more dynamic, goes deeper in the bass and sound clearer. The JFT input OPA828 has overtaken all these low distortion OP-AMPs. Pin can be left floating or connected to any voltage between (V–) I've been using LM4562's in my DAC for some years now and have begun to wonder what IC op-amps would be a real up-grade. In post #4 ”-125. 00とします。高音域、中音域、低音域、解像度、横方向の広がりについて、感じた音の差を数値化して表します。 なので主観的な測定値になります。ちなみにlm4562の音は非常に気に入っています。 I had the chance to gather up a selection of opamps from my parts bin, including BB OPA2604, OPA637, AD823, LME49860, JR4556, Muses8820 and 8920, and compare them against each other along with If you want a DC coupled design, then ideally you want to use a JFET input op-amp, where the bias currents at room temperature are in the pA range. I strongly suspect that the LM4562 has a more sophisticated input stage than the 5532, probably incorporating cascoding to minimise the effects of common-mode So they re-dubbed the LM4562 as the LME49720, keeping the old p/n because it's a massive pain for customers to deal with a 'change', even if in substance it's only a paperwork change. 5Vrms O OPEN-LOOP GAIN/PHASE vs FREQUENCY Frequency (Hz) Voltage Gain (dB) 120 100 80 60 40 20 0 –20 1 10 100 1k LM4562, LME49720 and LME49860 are basically the same opamp. Old op-amps such as the LF412 and TL072 are A comprehensive comparison between OPA1612 and OPA2156 (and other opamps) could be read here: You can however measure the difference. There are plenty of photos and videos online that will help you with this, including the video from Sparkos’ YouTube channel. Musical Fidelity LM4562 is similar to the LME49720 but can be too sterile. Discrete op amp nitty gritty: The SS3601 / SS3602 discrete op amps will outperform virtually all audio grade monolithic IC op amps in open loop gain, noise performance, output current, and magnitude of class A bias current. Sometimes I change from OPA2209 to OPA1612 to hear extreme detail OPA1612 let you hear the flies in the recording studio With OPA1612 you will hear details you never heard before. The LM's, like other op-amps that I have used have 4700uf caps at each power pin. But, what about AFTER the original input gain stage? drift vs temperature –40 °C≤TA 85 0. (Unity gain vs Burson V6 Vivid. I rolled the T6 Pro with the Oracle 02 op amps in the preamp output stage and the opa1622 in the A07. My perfect sound would be the 1612's with the bass of the 2132's. What's new. I have a 1988 carver stereo per-amplifier. frequency plots. So, parts are not spec'ed for or If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. One guess that one choice that comes to mind is OPA1612. Burson V5i-D better than OPA1612 stock Xduoo XD-5 . when we use opa1612 to translate difference input to single-ended output, the output is distorted, pls. 9nV, or -118. LM4562 max safe current (11MHz vs, 55 MHz)---thus much less chance of oscillation in vintage circuits. 5mm AUX OUT as output connect to next amplifier without volume control THD：0. com SBOS450C –JULY 2009–REVISED AUGUST 2014 5 Pin Configuration and Functions D Package OPA1611, SOIC-8 D Package (Top View) OPA1612, SOIC-8 (Top View) DRG Package OPA1612, SON-8 (Top View) (1) NC denotes no internal connection. LM4562 www. Now we're talking! Detail, soundstage, imaging, wow! Only downside is a definite reduction in midbass punch. Donations. --lme49722 lme4562 lm4562 opamp 比較したのは高音質のもの限定で厳選した電圧帰還icのlme49990、opa627、muses8920、opa1612（opa211）等ですが、これらよりも圧倒的に良いです。音はths4631の印象と近いのですがths4631側の安定性の問題（発振していると音質が劣化する）で同じ条件で直接比較でき National uses an additional 'E' in the name (LMExxxxx) to indicate their new high performance audio products. brjoon1021 Member. You can also try OPA1612 as buffer with OPA2822 for the headphone driver. I Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. It took about 3 weeks to get to me and arrived in a small bubble mailer from China, which is on par with most items that I order from China. 比較したのは高音質のもの限定で厳選した電圧帰還icのlme49990、opa627、muses8920、opa1612（opa211）等ですが、これらよりも圧倒的に良いです。音はths4631の印象と近いのですがths4631側の安定性の問題（発振していると音質が劣化する）で同じ条件で直接比較でき The Aiyima a04 with lm4562 is dead quiet - no hiss at all. Its possibilities are based on a Opa1612 and LM4562/LME49720 are both good. 4627 vs 4562 Now, I understand the advantage of using a JFET opamp (ADA4627) as opposed to a bi-polar(LM4562) when the source is high impedance, such as a guitar pickup----lower current noise. Both of them can be replaced according to the user's taste or the specificity of the whole sound installation in order to change the sound flavor. OPA891 is a single, while 2891 is dual op-amp. Joined Dec 21, 2023 Messages 29. Thread starter oldphaser; Start date Jan 10, 2016; oldphaser Chief Journeyman. Logged audiophile, but the tangentsoft guy does do real engineering work. Aiyima have confirmed they are the same analog linear potentiometer as the V3 but the sensitivity of the A07 MAX is twice that of V3, so while the A07MAX volume is nicer than previous Aiyima Amps but IMO the volume muses8920とlm4562の比較. headphones. At >$6 each it's not cheap, but it's a lot cheaper than the "discrete" opamps out there and at least it has specs, measurements, no obvious failings Hi there probaly a simple question maybe not. Now all the folks are using opa2134 op -amps as the replacement. I would use several thousand for one job, IF they were made Looking at the web page for LM4562 this morning I noticed that TI is marketing a device called OPA2891 as an alternative device. 4dBu EIN. OPA227 has 2 diodes in series , anti-parrallel = 1,2 V pp, maybe PNP like OPA1662 ( has single anti-parrallel diodes) . Joined May 31, 2019 The OPA1602 and OPA1604 bipolar-input operational amplifiers achieve very low 2. In addition to a volume control by rotary potentiometer, this preamplifier offers a triple tone control. KEY SPECIFICATIONS VALUE UNIT ±2. The "A" grade is selected (tested) for a guaranteed noise level, thus slightly Replacements: For the 5532 the opa2211A or opa1612 as well as LT1358. The price for the new LM4562 also dropped significantly at the beginning of 2019. 01% Replacing NJM2068 and NJM4580 by AD8620 or LM4562 . NS/TI folks, including those who were directly involved, have verified that both chips have the same die, go through the same manufacturing and test The OPA1612 opamp has similar specs to the AD797 and it is considerably cheaper, plus it has 2 opamps in a single package VS the AD797 which has a single opamp. abechap024 Well-known member. OPA2211A/OPA1612 also sound a bit better than LM4562, IMO. Having LM4562 in both amplifiers and they start to sound the same. Over this supply range the LM4562’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. the original first. Hi, I'm working on a compact SMD based PCB/build for Doug Self's EQ from LinearAudio#5. 4kHz bandwidth Here we see that the LM4562, LM833, LM49720 and OPA2134 all have the same level of performance with the NJM2742 having the worst performance of the bunch and the LT1352 being just slightly worse. A. LME49720 sound is boringand too light. For me its clear evidence that LM4562 is a very good op amp. On some of the newr parts TI has released measurements of the EMI immunity, e. 01 0. Audio amplifier device review: Fosi Audio ZA3 This is the second review I have written relating to a product from the FOSI brand, the first was relating to AIYIMA's latest TPA3255 power amplifier has PFFB function and is equipped with 48v5a GAN power supply. This feature, in combination ※在庫数欄の表記が『おひとり様 点まで』となっている商品は、現時点で、おひとり様（1団体様）あたりのご提供数量を表記の数量へ制限させていただいている商品です。 DLHiFi SX52B Fully Discrete opamp Replace OPA1612 LM4562 NE5532 AD827 For HiFi DAC Headphone Amplifer Phono Crossover Preamp Selamat Berbelanja dan mohon dibaca rincian pd deskripsi :) - Barang dikirim langsung dr Singapur/ china - Estimasi pengiriman 15 Harian Sampai Alamat The LM4562 (same die as the LME49720) was designed to produce a low open loop distortion - likely better than a 5532. the "specs" often given for various IC op-amps might help differentiate between the possible performance of one chip vs. Heard it all here with different LS and 高音質電源改善アクセサリーを中心に、音響を中心に電気で世の中に貢献しています。 ne5532，opa2604，lm4562，opa604 总谐波失真(thd): 0. 000015％という超低歪で1. If you want discrete, then Sonic Imagery 994 or the Weiss op amps. The V5-OPA op-amps are 2. so with a -12. 7nV and 1. you have to decide which things are OPA1611 vs OPA134 or OPA1612 vs OPA2134. Amplitude for a 32- and 16-Ωload • Fast-Fourier Transform (FFT) for a 32- and 16-Ωload The THD+N vs. So in this discussion, I will focus on the modern Vs. Rja4000 Major Contributor. The LM4562 is decent but the LME49723 sounds better. 00003% @ 2k欧, vs=± 15v 压摆率: 20v/μs 增益带宽: 55mhz 因为稳压板加调压板坏了，只能用电池供电，18v的高压下，听到了各种直流信号，和手机信号的干扰，但还是能听出这个顶级运放的基本声音的。 This is a visual "off the scope screen" comparison of four different op amps often used in audio circuits. In terms of noise performance in the real world the OPA1612 beats the 首先关于lme49710、lme49720、lm4562这3款运放一直有个疑问，究竟这三者之间是什么关系，lme49710是单运放，另外2款是双运放，lm4562是lme49710的双运放版本吗？ 那lme49720又是什么呢，而且lme49720的spice库也没有在ti的官网上找到。 How to choose between lm4562 vs ne5532. OP . 25. jokan Addicted to Fun and Learning. I would like to see these parts offered in a DIP package to replace the OPA2134PA. ••• • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. ground. TI’s LME49860 is a 2-channel, 44-V, high-fidelity, high-performance audio op amp. Now we are going to walk into a different level of design, discrete V5 series (OPA) design by Burson Audio. R. 愛用しているnfjのfx-audio fx502j-sのオペアンプを標準のne5532からlme49720と同じと言われているlm4562に変更しました。 lm4562とopa627auどちらにするか？ lm4562は500円、opa627auは3000円!!で全く値段が違います。 THD+Noise vs Frequency 3 Description The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. I talked yesterday to my buddy Greg B. Although NE5532 performs well, many audiophiles still want to improve the sound quality by replacing the OP chip. The circuit with the values shown in the linked article (but without the High and Low resistors and without the 1K input resistor): AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. Did a Baxandall tilt-filter for a high-end speaker project with them as I've read about the 'Sondigo vs. de and as stated on their website, it arrived without a power supply. Theme - Light; The newer LM4562/LME49720 series improves on many parameters at once cf. 1nV/√Hz Noise, Low THD and Precision | TI. It is a little bigger than a standard op-amp because of the adapter, so be careful when fitting it. Reply. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric The biggest thing I noticed about the V5i was how accurate and snappy the audio is, excellent for movies and bass tempo oriented music really pops. ADA4625-1/2 are supposed to be even better than the ADA4627-1, though I've yet to try them. 2 μV/ PSRR Average input offset voltage shift vs power supply voltage ΔVS = 20V (3) 110 120 dB ISOCH-CH Channel-to-Channel isolation fIN = 1kHz fIN = 20kHz 118 112 dB IB Input bias current VCM = 0V 10 72 nA ΔIOS/ΔTe mp Input bias current drift vs temperature –40 °C≤TA 85 0. 0001 20 100 1k 10k 20k G = 100V/V G = 10V/V G = 1V/V Measurement BW = 80kHz See “Distortion Measure-ments” for description of 1kΩ test method. Warm Mids (Deep and Full) . Two LM4562 operational amplifiers mounted on DIP-8 support (removable). vintage high performance op-amps in the simple non-inverting pre-amplifier gain stage. Perhaps it's a further development. The OPA1602 and OPA1604 series of op amps offer rail-to-rail output swing to within 600mV with 2kΩ load, which increases headroom and maximizes dynamic range. Forum Donor. 5 KB · Views: 8,271 OPA1612, OPA2211, LME49720HA, OPA2111, AD746 (class A), AD8620, AD8066, OPA2228, SMSL SU-10 vs M500 MKIII vs DO300 21 vs 9 vs 11 dual op-amps OPA1612 (accoring to the spec from smsl-audio) What is the Op-amps doing in that? M500 SINAD Reviews. AliExpress assurance. It's best use as an alternative to opa1612 when noise is not a big concern. For the TL072 the AD8512 (should usually also work as 5532 replacement). So, did some research and ordered up OPA1612's with SOIC Adapters. The amp sounds pleasingly full. Find parameters, ordering and quality information The OPA1612 does not seem to have the process contamination of the LM497X0 that produces rocky-sounding noise. 5V, VEE Hi all, Tried few OPAMPs myself in I/V, LPF, VAS and BUFFER stages with my Essence One DAC/headamp, like: NE5532, LM4562, NJR2114, OPA1602, LME49720, MUSES8820, MUSES8920, OPA2604, OPA1642, OPA2132PA, AD8672, AD8599, MUSES01, MUSES02. Click to expand Had another go at the op amps today as I have some time on my hands. it might be, but it depends, and not all will It was a deliberate experiment and I was expecting fakes. The amp Originals were JRC5532DD, and I've got OPA2604, OP275, and LM4562's to try. 2 μV/°C Temperature Average Input Offset Voltage Shift vs PSRR ΔVS = 20V(5) 120 110 The LM4562 is an exception, but otherwise it are the fast op-amps that JRA has trouble with: Misbehaving: OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, 40 MHz Behaving well: OPA2604, 20 MHz OPA627, 16 MHz OPA2107, 4. Be sure to include the AD746, the OPA2209, and the ADA4898-2 (mounted on SOIC-to-DIP adapters) in your rotation. I was wondering if the OPA2604's could be replace with a dual opamp like the OPA1612 with similar or hopefully better results than the OPA627's ne5532，opa2604，lm4562，opa604 总谐波失真(thd): 0. Background I do own/have owned discrete(ish) devices (R2R dacs, Sapphire discrete amp etc) and loved the analog sound out. Patreon https://www. I no nothing about this. Is it a lm4562 or Opa1612 ? Can you show a picture of the supplied remote ? Is it the same as for e30 II , or is it cheaper and smaller ? Last edited: Sep 2, 2023. Burson Audio V5 Discrete. That said, a few people consder the OPA637 an 'upgrade' from the AD8620. The LM4562 A07 does work really well if you feed it with a good preamp like the Aiyima T6 Pro which also is flexible when it comes to op amps. The LM4562 has slightly worse noise and distortion measurements than the OPA1612, but the difference is so small that it probably does not change the total SINAD of the complete amplifier for buffers that have a simple single ended circuit (like the EVAL buffer, the VTV, Nord, Apollon, Audiophonics buffers and many others). I got by far the best sound with the Muses 02. I note that the LM833 and LM4562 datasheets contain identical RIAA phono circuits in their application notes. The new national opamps are also there with extreme slew rate of 1900v/usec just like AD815. hi i wanted to know if anybody have used the above opamps. Table 1. png. The OPA1612 is a bipolar IC while it's brother the OPA1642 is a JFET. These would toast at +/-20V so minor tweaks of the power supply/voltage dropping resistor may be needed. Pin can be left floating or connected to any voltage between (V–) LM4562 and LME49720 are the exact same part just different model stamped (stated by an ex-employee) The LME49860 is just a LME49720 that passed a higher voltage test. g. . I couldn't tell the difference between the IMD vs Frequency +VCC = –VEE = 2. A more refined sound The advantages of the V3 compared to the MAX: 1. Opamps LM4562 vs LM4562na . With OPA1632 both channels show equally low -116 dBV (non-weighted) noise while with LME49724 there is some variation in one Directly interchangeable with LME49720, LM4562 and LME49860 for similar operating voltages. I hear OPA828 is the new version of the OPA627, so I may try that one out. 真的不知道这次又会出什么幺蛾子，讨论2604就被要求拍正反面照片，我就偏不发。然后推荐lm4562又被说良品率不高，哪年的好他们手上才是正货，反正这些玩意一出一出的套路多得很，就差所有人的运放必须经过这些混子签字认证了，今天改推荐opa1642了，参数，价格，音质无可挑剔，看看又玩哪样 DLHiFi SX52B Fully Discrete opamp Replace OPA1612 LM4562 NE5532 AD827 For HiFi DAC Headphone Amplifer Phono Crossover Preamp. invalidbuffa; Aug 2, 2013; Solid State; 2. NE5532, e. NE5532 (5nV and 0. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. NE5532: The resolution is average, the high frequency is relatively dry, and the low frequency is TI 5532P vs ST TL02CN Inverting configuration Gain=10 Output=1VRMS across 2kΩ Load. 0000548%. 001 0. I conclude that I should obtain an LM4562 TI’s LME49720 is a 2-channel, 55-MHz, high-fidelity, high-performance, RRO audio op amp. The data sheet is very handy for audio designers working with 600Ω loads, but also presents apparently conflicting specs, and lacks 2KΩ load data. who builds large PA speaker systems. 1mV: 60000pA: 114dB: 40MHz: AD8066 AD823 AD826 AD827 AD8397 AD8599 AD8610 AD8620 Bandwidth Bias current CMRR Gain LM4562 LME49710 LME49720 LME49721 LME49722 LT1057 NE5532 Noise Offset OPA1611（シングル）およびOPA1612（デュアル）バイポーラ 入力オペアンプは、0. Treble with a bit Warm . 3. This made me think to go extra slutty and replace it with the BurrBrown OPA1612: OPA1612 SoundPlus™ Audio Operational Amplifier with 1. It's designed for superior sound clarity and performance in audio systems. Share Reactions: atmosfearz. The OPA 1612 and the 1642 is to my ears better than the 2134. com SNAS326I – AUGUST 2006– REVISED JANUARY 2010 LM4562 Dual High-Performance,High-FidelityAudio Operational Amplifier Check for Samples: LM4562 Average Input Offset Voltage Drift vs ΔVOS/ΔTemp – 40°C ≤TA ≤85°C 0. But that does not say anything about the SQ. There's no premium grade components. LM4562 Dual High Performance, High Fidelity Audio Operational Amplifier General Description vs Temperature –40˚C ≤ T A ≤ 85˚C 0. Tone Control: Bass Medium High: OPA (on DIP-8 support) 2x LM4562: Regulators: 1x LM7812: Relay: 1x RY12W-K: lm4562、lme49720：三频非常平衡，高频中规中矩，中频和低频都不错，声场不错，但久听感觉高频缺乏感染力，总体还是不错。 推荐度：★★★☆ LME49860：三频非常平衡，高频通透，中频和低频中规中矩，声场不错，总体还是比较耐听，感觉比LM4562、LME49720好一些 Personally I prefer LM4562, OPA2228 and OPA1612 over OPA1642 because of the input noise that makes it sound less pristine. Find parameters, ordering and quality information 部件号：OPA1612 主题中讨论的其他部件： OPA2134， LM4562. Some are affordable (the LM4562 which runs less than $1), and some are expensive like the popular $25 Burr Brown TL072 is a JFET input opamp, so its main strengths are negligible input bias current and input current noise, and a peculiar input common mode range that is useful in many designs, including this one. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. 000015% at 1 kHz. Thread starter Roushon; Start date 2014-02-04 8:21 am; Prev. OPA 1642 and the OPA 827. V = 3. I'd go for an OPA1612 as an upgrade in virtually every circumstance. com ELECTRICAL CHARACTERISTICS FOR THE LME49860(1) (continued) The following specifications apply for VS = ±18V and ±22V, RL = 2kΩ, RSOURCE = 10Ω, fIN = 1kHz, TA = 25°C, unless otherwise specified. Will report back once I make any conclusions. Sometimes the company decides to go from two letters to three in the part number and parts get stuck in the middle. Joined Sep 8, 2012 Messages 848. Some have voltage requirements that make them only compatible in certain designs, etc. At a price. Removing IC op-amps can be a little tricky, especially if they’re located in a tight space or if you don’t have the - LM4562 - OPA1611/OPA1612 (single and dual) Reply reply spicy_hallucination • Keep in mind that higher openloop gain . The OPA132UA is the best FET opamp that I know of. TI's OPA1612 is industry's highest-performance dual-channel, bipolar-input audio amp for apps such as pro audio/broadcast studio equipment, microphone pre-am The ones I subbed were LM4562's, which work fine with the Aiyimas. I use these amplifiers for pro audio. Probably the first op-amp you can't beat using external front end transistors in a mic amp. 5V operation, but it's a very good chip. Perhaps the LM4562 came out before the change so they made a new part number to indicate high end part. I must Just replace the original op-amp with one with a similar specification, if it's not possible to find an exact replacement. This takes a slight LM4562 - decent - as mentioned above quite crisp if a touch metallic sounding* OPA16xx (i. Jun 11, 2018 at 9:36 PM. The OPA1642, Buy and try several. So about the price of an The pages for the "Hypex NCx500 DM Lux Dual Mono Amplifier" & the "Hypex NCx500 ST Lux Stereo Amplifier" state that they use the OPA1656, but the "OP Amplifier Selection" drop list has the OPA1612 (and the Sonic Imagery and Sparkos options), while the page for the "Hypex NCx500 ST Stereo Amplifier" only mentions the LME49860, LME49860MABD, LME49860NABD SNAS389C – JUNE 2007– REVISED APRIL 2013 www. Will be trying these in gain stage: OPA1611, ADA4610 so I would use old school OPA2134 or LM4562. 1nV√Hz: 1700fA√Hz: 27V/μS +4. Frequency, THD+N vs. I've had an OPA1612 lose its mind in a filter circuit where an LME49720 Below are THD+N vs. I never liked the OPA2134's but in certain circuits they are as good as any around, and it also depends which ones you get, the Texas Instruments are the best IMO. 5 DAC > analog out to Creek 5350- II power amp > biwired to Mission 701 speakers on 2 foot sand filled stands . I have also tried opa1642, 1612 and 2134, but they are all slightly inferior to lm4562 soundwise in Preamplifier with Tone Control OPA LM4562. The second one could be a bipolar type with good drive capability such as the LM4562--about the same price as the 2134. diyAudio Community diyAudio Store. Replacing NJM2068 and NJM4580 by AD8620 or LM4562. Burson V5i-D and Muses02 are very good But balanced sound not heavy bass. NJR Corporation MUSES01 IC. patreon. I personally decided a few years back, that it was time for me to get rid of Frequency (Hz) Voltage Noise Density (nV/ Hz) 1 10 100 10 100 1k 10k 100k 1M 10M C020 + + ± ± Treble Bass +15-15 1/2 OPA1656 1/2 OPA1656 Input Output Pad Product Comparison LM4562 vs OPA2134 vs NJM2068 vs NJM4556 LM4562: Strong bass . Click to expand - LM4562 seems to have a bit better SNR than NE5532 when used in LPF AD8672 and OPA1612 are also very good opamps for use in LPF. The LM4562 datasheet indicates it has at least 12dB greater open loop gain than LM833 at all audio frequencies. The LP filter on the DAC appears to be similar to the one in the application note by OK, I'm going to send you an lme49720, but I also found some more that I forgot I had. Noise of the A07 is mostly defined by high resistance values in its resistor network around the input dual opamp, there is no chance for Replaceable Op-Amp Chips:OPA2604AP, OPA2134, MUSEO1/02/03, LME49720NA, LM4562, AD827AQ, etc AUX OUT: active nsubwoofer or power amplifier 3. That didn't happen with the good old LME49990 and also less pronounced with e. 基本的に今使っているlm4562の評価点を1. IMO, the ADA4627-1 has a fuller, more "musical", sound than the somewhat thin/sterile LM4562, whilst still retaining nicely detailed highs, and remains my favorite sounding op amp to AD8066 vs LM4562 I am using an AD8066 in the O/P stage of a Musical Fidelity X-DAC V3, preceded by OPA2134s, instead of the original all NE5532s. Members. Also, according the data sheet, OPA1612 #1. Jul 20, 2010 #8 the LT1358, the LME49723, LM6172 all sound better than the Anyone know whether the LM4562-LME49710-LME49860 series are PNP input or NPN . . I use OPA1612. Even the coveted OPA627 monolithic op SPECIFICATIONS V S = ±15 V at T A = 25°C, unless otherwise noted. One other very noteworthy difference is the Vivid has a strong attack, but loses a bit on the decay so sustain is better on the SS360x. Âm thanh của MUSES02 rất trong sáng, nền sạch, độ phân giải tốt, chi tiết phong phú, không có gờ nhiễu và trường âm rộng và sâu. The hiss is slightly higher from Aiyima a07, but still very low. 22dBc=548%” is incorrect and Correctly 0. It’s worth pointing out now, this V5i design is excellent for games on PC. The higher current drive of the OPA2822 would be beneficial. Here we see that the LM4562, LM833, LM49720 and OPA2134 all have the same level of performance with the NJM2742 having the worst performance of the The LM4562 is unity gain stable. Share Feb 10, 2023 at 10:03 AM. raoultrifan said: This will kind of be a comparison of the OPA1612 to the Burson V5i. I hesitate to recommend those without simulating the circuit. The OPA1662 and OPA1664 series of op amps offer rail-to-rail output swing to within 600 mV with 2-kΩ load, which increases headroom and maximizes dynamic range. 5 meters from side walls. 1 nA/ IOS Input offset LM4562; AD8512; OPA2209; And for reference, I am testing this with: Foobar2000 -> Schiit Wyrd -> Peachtree Audio X-1 (coax) -> Denon DA-500 -> O2 -> HD650 / Denon AH-D2000 / VSONIC GR07 Classic Also I read somewhere the OPA1612 is somewhat related to the OPA2211 and the 1612 is more the "audio" version of this This time around I listened to OPA211, OPA2211A, OPA827, OPA1611, OPA1612, LME49720, LME49860, LM4562, XR5532, AD797, THS4052, OPA2107, and AD8599. NE5532AN. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. New posts Latest activity. help to check the reason. For that kind of money I'd suggest getting OPA2211A or rather the lower-cost OPA1612 which has slightly worse DC specs, which doesn't matter here. According to the TI datasheets OPA1612 has less noise than OPA1656. To drive headphones you might want to look at buffering the output with someting like BUF634. All measurements were taken using ±5-V supplies at an ambient temperature I tried the OPA827 too - too bland and lifeless. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. The new LM4562 also has very low input bias currents, and you can safely direct couple low value pots (10k or less) into its input stage. OPA1656 sounded worst, Muses 8920 sounded best. Packaging: I ordered a single V5i Dual from Burson. My 24/192 sound card had the standard 3532A's on board. Suggest measure your supply voltage pin 4 or 8. I have a Muses 8820 and 8920 that came with my sound card, so I'll put them in as well. I also refurbish large format recording consoles. As I know, OPA1612 isn't better for my application. ). So, it is a different design and chip. 0nV, or -120. But it's a bit emotionally distant compared to 前回、NJM8830GM1の表面実装を行いDIP8化したので音質チェックしてみる。以前購入したオペアンプと聴き比べてみる。ついでに最近購入したOPA1612やOPA627AUも音質比較してみる。オペアンプは自作Chu MoyアンプやFX-AUDIO DAC-X3Jに接続。イヤホンにはソニー XBA-N3を使って試聴してみた。 NJM8830GM1同じ Some will point out the OPA1612 (which is even better) or the OPA1656. Currently, I require opamps in the DIP package. Share Reactions: LaughMoreDaily. The first step is to find and remove the existing components. 1; 2 These days the likes of OPA1642 / OPA1612 are routinely used, so I leave those alone. 6mA: 140dB: 120dB: 0. I replaced them with LM4562's (and did some extra PSU One can almost not find two more different sounding IC:s. LM4562 LT1057 TL072 NJM4580 OPA1612: OPA1612是德州仪器公司（Texas Instruments）出品的单声道音频运放，具有低噪声、低失真和高带宽等特点，适用于LPF和HPF、音量控制、Mixer和Buffer等应用场景。 Other Parts Discussed in Thread: LM4562, , INA1620, OPA1622, OPA1656, OPA828, OPA1642, OPA1678, OPA1612, BUF634A. I find OPA2604 more laid back/smoother and LM4562 very crisp/more forward. You have to try it yourself to hear the difference, because the measurement advantage is very small, so it should be non-audible , but it is not. warm, revealing, etc. My own conclusions with MUSES: In I/V stage: - MUSES8920 is The soundstage is not as good as with the LM4562, but still has width and depth. 帖子标题："LME49720 vs LM4562 - A/B Test Results for DAC Output Stage" 当然，目前也有很多新型高性能运放器面世，例如TI的LM4562和LME49720、Analog Devices的AD797和OPA1612等，这些新型运放器在音频性能和适用范围等方面更为出色，因此也被越来越多的音响产品采用。 Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, LM4562 max safe current . 0014% THD (see Figure 4. 5V, RL = 600Ω 30057921 Voltage Noise Density vs Frequency +VCC = –VEE = 15V 300579p9 Voltage Noise Density vs Frequency +VCC = –VEE = 18V 300579q0 Current Noise Density vs Frequency +VCC = –VEE = 15V 30057917 Current Noise The combination of OPA1656 as U1 and LM4562 as U2 gave the lowest measured noise, but there was a negligible audible difference when the LM4562 was replaced by a NE5532. Last edited: Feb 8, 2023. Samuel Groner did raise some common mode concerns with the LM4562 depending on how it’s configured. It's only just barely rated for +/- 2. Those are fine. 7pA per root Hz) gives 926. The opamp its self was inside a small plastic case filled with foam. 000015%)。 OPA1611 和 OPA1612 在 2-kΩ 负载下能够提供摆幅在距离电源轨 600mV 的范围内的轨到轨输出，这有助于实现动态范围最大化。 What was omitted from the LM4562/LME49720 history is that the part was cancelled, because the 6" wafer line it was sourced from went way, and then resurrected on a new 8" wafer line. OPA6x7 Precision, High-Speed JFET Operational Amplifiers 1 Features • Very low noise: 4. Is the 2134 the right choice. common mode voltage that I've measured on any op amp. I will go back to my NAD at some point, but I could live with this sound pretty easily if something happened to the NAD. Amplitude, and FFT measurements were taken using an Audio Precision APx555. (Supported by same response graphs in their datasheets) The LM4562 has a wide supply range of ±2. You can use a combination as well. noise, bandwidth, THD and output current. You won't find things like OPA1612. Joined Jun 2, 2020 Posts 1,340 done at a far higher level of quality than say LM4562. The sparkos opamps are very good as well Even AD797 or OP627 cant hold a candle vs OPA1612 in terms of SQ - the difference is HUGE! My preamp sounds best with OPA1612 for gain and OPA2192 as buffer. Most manufacturers use sockets so the op-amps can be swapped, and each have a difference sound signature (e. 6pA per root Hz) gives 739. OPA2192 being my favorite CMOS opamp and OPA2209 my favorite bipolar alongside OPA1612. (LM4562, OIPA 2134) and many more OPA1611, OPA1612 www. 这个东西没必要买。 lme49720 和 ne5532 都是bjt 的架构，如果深究的话，输出级不一样。 lme49720和 ad797 差不多， 类似的片子其实很多， lt1469/lt1468, lt1028(用两片), ad797(用两片), lme49990 (用两片). B. Post #7,248 of 7,394 povidlo 1000+ Head-Fier. Dears . Choosing between the LM4562 and NE5532 depends on your specific application requirements and priorities. A few suppliers sell it as one part number, but not the other. 3 nV/√ Hz noise density with an ultralow distortion of 0. (€20 DAC) vs a Topping E30 II (150€) vs the internal DAC on a Marantz CD-Player. But again, I'd try the LME49723 first, it's cheap and sounds very good. LM4562, and NE5532, and OPA2134 sounded the best. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 . Identified internal components and lme49720ha是新一代“运放之皇”lm4562的变种版本，是opa128的升级品种，音色唯美尊贵，全面均衡，正统标准，声底干净，自然耐听， 动态大，分析力高，低频下潜也深，人声甜美润泽，娇艳动人，中高频透亮度好，细腻柔顺，富有感召力，色彩照人，情感表现 The OPA1641 would be slightly better. com/user?u=12254451Mail vs FREQUENCY Frequency (Hz) THD + N (%) 1 0. Joined Sep 16, 2005 Messages 1,021 Location Currently, the op chip used on AIYIMA A04 & A07 is NE5532. I kept the test output level at 0dBV to avoid visible THD contribution from the sound card. 5V to ±17V. Volume control on the V3 is more subtle control over lower volumes. I have not tested the OPA1612 with high value bias resistors to see if it has the latch-up/bias current correction start-up issues of the LME49720. another in "ideal" situations, but often this is of absolutely The LM4562 is a very respectable and fairly affordable option vs the NE5532 IME. 当我们使用opa1612将差异输入转换 为单端输出时， 输出会失真，请帮助检查原因。 下图是“Sch”，失真的波形附加了音频。 此外，当我们使用opa2134或lm4562来替换opa1612时，失真 消失了。 IC opam âm thanh MUSES02 chính hãng ( có thể nâng cấp cho OPA2604 NE5532 LM4562 ) MUSES02 là một opam đôi - dual-op - cao cấp hàng đầu sản xuất bởi Công ty JRC tại Nhật Bản. 从上表中可以看出，ad8620brz和lm4562在参数上有一些明显的区别，总体而言，lm4562在频率响应、增益带宽积和输入电流噪声密度方面表现更出色。 关于AD8620BRZ，它是一款极低噪声的音频运放器，具有非常高的增益带宽积和通用放大器性能。 I have tried ne5532, opa2604, lm4562 and opa1612 and I prefered LM 4562 in both Aiyima a07 and the tpa3251-based Aiyima a04. OPA2604, AD823, AD712, LME49720NA, and LM4562 which none of them, in this headphone amplifier application can match with the sound quality as near as this OPA1622. An OPA1612 has slightly better specs than an LM4562---less noise and distortion, faster, and more output voltage swing. Tak a můžete dawsoa klidně za to zmasakrovat,neb jsou to poznámky z dob dávných a baví mě vždy číst reakce na tzv novodobý kacířství co smí a co nesmí bejt slyšet nicméně bych si spíše přál aby to byla blbost a placebo,jenže to by bylo všechno až moc snadný Obviously the opamps performances give their best in a dedicated circuit, but I will only make a journey in the 8dip socket dual opamps teorically straight replaciable NE5532P, NE5532D, NE5532DD, NE5532N, NE5534P, LF353N, OP275, TL052CP, TL072, JRC2068D, JRC2068DD, JRC2114D, JRC2114DD, JRC4556AD, JRC4558D, • THD+N vs. 5nV/√ Hz noise density with an ultralow distortion of 0. Post #6,064 of 7,394 nesty 100+ Head-Fier. I designed and built a battery-powered preamp around the LME49720/LM4562. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically THD+N vs Frequency VCC = 12V, VEE = –12V, VOUT = 3VRMS RL = 10kΩ 20157266 THD+N vs Frequency VCC = 17V, VEE = –17V, VOUT = 3VRMS RL = 10kΩ 20157268 IMD vs Output Voltage VCC = 15V, VEE = –15V RL = 2kΩ 201572e6 IMD vs Output Voltage VCC = 12V, VEE = –12V RL = 2kΩ 201572e5 IMD vs Output Voltage VCC = 2. For gain: OPA209 but only against NE5534 and V6V singles. OPA1612 dual OPA is about $60 USD for 5 from Audiophonics. Find parameters, ordering and quality information. Like so many things in audio, how the device is used in a given circuit is a huge variable, and will undoubtedly have an impact on sound, so swapping op amps isn't as simple as just "upgrading" with a better one. , the OPA1612. cjlzzyfjtfcvruirfugbruheqixmqcwsitgnphkykfgpc