Opa2134 vs opa1642 13 mA Jul 4, 2009 · The OPA2134 has completely left its mark. I adapted the 12V power circuit and the output layout from the Pimped Alice and dropped the OPA1642 in. Dec 3, 2018 · Something like the OPA1642 might work ok, but it's SMT only as far as I know. Downside is they are SMD only. opa1612和opa2604哪个好. Low end: NJM2068 NJM2114 I'm thinking OPA1642 or NJM2068 at the input and OPA1612 or OPA1642 at the output could be an awesome setup. Aug 1, 2011 · Thanks b0ck3n, I didn't make Wednesday even in my time zone this time. OPA2134 with JFET front end or NE5532 would be O. Feb 4, 2014 · OPA2132 and OPA2228 are really good sounding op-amps. Last edited by mediatechnology; 30th November 2017 at 11:52 PM . opa1642はopa2134の後継のような品です。 OPA1656はFET入力でありながら電圧雑音が非常に小さくなっています。 FETによる入力バッファとバイポーラ入力オペアンプを組み合わせた回路ほどではありませんが、 一昔前のバイポーラ入力オペアンプを凌ぐほどの電圧 特に雑音は従来のfet入力オペアンプを比較するための定数だとその性能を生かせないほどです。opa2134やopa1642用の回路でオペアンプだけそのまま置き換えるのではもったいなさすぎる性能だと思います。 オーディオアンプにも少し使ってみました。 Aug 13, 2014 · G'day all, one thing that I've noticed from my own DIY work is that the OPA2134 seems to draw more current in normal operation. I tried the 1656 in there but didn't feel it added anything. GMT+8, 2025-5-22 12:05, Processed in 0. (Came with the other DAC an Aune X8 XVIIIth. Last edited by J3RK on Tue Dec 04, 2018 3:58 pm, edited 1 time in total. I think lmh6643 and opa1656/opa2156 have the lowest distortion at higher frequencies, 6643 probably even lower. Oct 5, 2020 · Only really better substitution for NJM4580 for example as Pre-Amp can be no less then OPA2228 or even better OPA1612, but for that -3dB less noise (and distortion) over whole audio spectrum you will have to play premium extra. These replacements sound clean, crisp and dare I say it. Jul 18, 2021 · OPA2134 is good but it consumes more power than normal (8 to 10 mA per IC) and it is not rail to rail output. High resolution was lost. I simply explained my reasons for why i think they are lower noise, but i also heard them in real circuits and noise wise they outperform ne5532 in high gain circuits . I am testing the A07 with 2 different power supplies. That was the circuit where the OPA2134 sounded better. Strong bass. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. Jan 15, 2020 · test_OPA1642 vs OPA2134. Oct 23, 2005 · Is there any better OP than OPA2134 regards Progg70 . 1nV/√ Hz) 和超低失真 (0. These three Op-Amps sounds great. 1nV√Hz current CMRR Gain LM4562 LME49710 LME49720 LME49721 LME49722 LT1057 NE5532 Noise Offset voltage OPA134 OPA1612 OPA1642 OPA2111 Jan 7, 2020 · If you don't mind adapters, the smd version of the opa2134 is cheaper. Now the results are pretty much identical which is not what I was expecting. Got these when they first released them b4 the acquisition of LME from National. This may be the case with low frequency filters. It was less "real", less "live" and less "musical" to my ears. 其低压性能特别出众并且工作稳定，是磨声卡的首选运放，全面超越OPA2604AU，OPA2134，NE5532等。OPA2134是它的(lower quality）版，在低压情况下可能出现不稳定状态。这时候最好的选择就是将其更换为OPA2132U。 “这是一个很好的运算放大器系列。 Sep 5, 2010 · hifidiy论坛-看看ti公司对自家ic的定位：ne5532 与 opa2604 是同一档次的rc4580 与 opa3124 是同一档次的rc4580 /4560 等与4558内部等效电路是一样的，只是前者比后者拓宽 Sep 30, 2010 · In fact when the originals were first installed I remember thinking that they didn't sound as good at the LM833's in there previously! But these OPA2134's sound nothing like the original ones. Two different op amp affect the output stage 50/50 each. 150849 second(s), 17 queries . Hi there probaly a simple question maybe not. The OPA1642 is considered an "upgraded" OPA2134, with slightly better specifications all-around, so if you don't want to worry about whether the transformer is up to snuff, they are ideal. ti. May 19, 2017 · Did you tried OPA1612? I wish to hear something about OPA1612 vs LM4562 M. During testing, OPA2134 and OPA1612 came out good. over operating free-air temperature range (unless otherwise noted) (1) MIN MAX UNIT V. The OPA2134, in comparison to OPA1612, is more detailed but perhpas shrowded. Then I found the OPA1624 and it had a quiescent current low enough that it should work. 147439 second(s), 17 queries . Aug 10, 2022 · opa1641, opa1642, opa1644 — 550р в ЧД (1642) opa1642 — звучание по сравнению с opa2134 еще более проработано во всем диапазоне, прекрасно отрабатывает перкуссионные инструменты, вокал, ударные, смычковые, духовые. Not sure a guitar effect could do it justice. 4mA), and its MAX draw is LESS than the 072. I am reliably informed that this is quite normal with the OPA2134. A May 13, 2015 · NE5532 is dual channel opamp, so you can try few of these: opa2134, LM4562, opa1642, opa1656 without burning too much money on rolling opmaps. . It's a toss up between the JFET input's higher noise vs their lower sensitivity to input impedance changes. I'm wondering why OPA1644's audible sound quality is so much better while RMAA measurement result is about the same as 2074 Oct 2, 2021 · I also think that op-amp rolling is rather fun, even if the only op I found to be sounding clearly better than ne5532, was the lm4562 ( the others I tried: opa1642 opa2134 and opa1612 ) Last edited: Oct 2, 2021 Mar 17, 2019 · Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. In a Cmoy, or other application, where the op amp is driving headphones directly nearly all of them are working under stressful conditions. The article was another late night "rush job". Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and improve sound quality. The JRC3414a is specifically a high-current output and most common devices won't work there. Dec 6, 2018 · I would recommend OPA2134 or OPA134 and if you have money the OPA627 or OPA637. BB still charges a fortune for the 2134 DIP at 4 bucks. 4 电性能特性：vs = ±2. S. Vs what was installed in the factory (opa2134 IC) has more distortion starting from 1~2khz and up. Jan 17, 2022 · opa1612声场算是比较好了，尤其在纵深方面。当然，，，lme49860更好我同意，你不提的话我都忘记了这个了，的确是个很好的选择，也不必49990单转双麻烦了。 lme49720ha 这个是个被称做【高保真】的运放，但是它真的保真么？根据实际使用，并不看好这个运放，我觉得这运放并不保真,论三频均衡度，的确无可挑剔，但是出来的声音就是有点假，不是那么自然，也只能拿均衡器来比喻了，比如一条直线什么都不调是高保真，那么这颗运放就是所有频段都增加 Feb 11, 2021 · CS4392 with stock OPA2134 output filter is attached as image 2 and in percent as image 3. Feb 11, 2021 · I have a fully parametric EQ design that I would like to build using OPA1642 op amps, because even with about 6 of them cascaded, I expect their noise and distortion to still be inaudible. Maybe this OPA2134 will replace one of NJM4556 forever. I also refurbish large format recording consoles. Mar 7, 2019 · Sometime I use OPA1612, OPA1642 and OPA1622. I guess I am measuring the CS4392 chip more than the op-amps. Warm Treble. Mar 4, 2012 · opa2134 ナチュラルビューティー。脚色がほとんどない、いわば素肌美人である。音の抜けが良く、ジャンルを問わず使える感じ。超高域の解放感はもう一歩か。でも、充分リファレンス用途までいける。単価も音質の割に破格と言っていいだろう。 I've got a circuit right now on the bench where I'm comparing the NE5532, NJM2114, OPA2134, OPA2604, OPA1642, OPA1612 and the LME49720. The input is essentially shorted with 10mohm resistor in order to have a -140db control signal. Apr 10, 2023 · Today I will start this topic of comparing different chips for this circuit. I last tried the circuit with OPA2134 in year 2000, and with TL074 in 1992. 5V to ±18V 90 106 dB Channel Separation (Dual, Quad) dc, RL = 2kΩ 135 dB f = 20kHz, RL = 2kΩ 130 dB INPUT BIAS CURRENT Input Bias Current(4) V CM =0V +5 ±100 pA vs Temperature(3) See Typical Curve ±5nA Input Offset Current(4) V CM =0V ±2 ±50 pA INPUT May 24, 2015 · If you can use a bipolar OP, the NE5532 is usually the better choice than a JFET OPA2132 / OPA2134. 2 days ago · Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. Regards, Felix. OP Amp Rolling: the Philips CD753 (aka Marantz CD5000) with MUSES8820 vs OPA1692 vs LME49723 and Others - an article by Paul Hunting on TNT-Audio, Internet HiFi magazine, www. The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. The circuit is not particularly critical as to whether it needs to be FET, bipolar or low Ib. K. Nov 23, 2013 · 既然是交流，就得允许说三道四，同道会心一笑，歧路礼让先行 音频设备绕不过去的是扬声器，只有搞清扬声器再谈电路才有意义，由于自感和纸盆、支架弹性限度的存在，扬声器是对流过其中的电流做出的反应比较忠实，对电压的反应就差一点，耳机的这种现象小一点，但确实存在 Jul 3, 2011 · the OPA2134 is a "reasonable" option at about 3 bucks a shot,i need four of themwith shipping that's about 20 bucksbut other options,and there are many,can run significantly more than thatas i said in the first post,there are 8 5532's following those,luckily i'm pretty happy with the improvement the TI's made there,as anything else . For an improved, general TL072 replacement, I would suggest the OPA1642. Mar 10, 2017 · opa1642 — звучание по сравнению с opa2134 еще более проработано во всем диапазоне, прекрасно отрабатывает перкуссионные инструменты, вокал, ударные, смычковые, духовые. com. In the gain stage it'll probably be LM4562 or OPA2134 for now. Tu na razie już nie ruszam. They do sound differently on different type of loads and i'm not a golden ear. Use the OPA2132P rather than the OPA2134. OPA1642: 2: 0. OPA1642 is its replacement despite the lower type number. Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Die französische Übersetzung ist von Google. Technical Expert. My go to for a really high input impedance was the OPA134 and OPA2134. First one is a cheap chip opa1642. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. Mar 20, 2018 · Tested the OPA1642 for the I/V of D10. com and all are unity gain stable. The OPAx132 is the slightly better version for DC critical applications. com Mar 14, 2010 · Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. Yes the case gets a lot warmer than op amps like the NE5532 and the LM833. common mode voltage that I've measured on any op amp. Mar 21, 2023 · 本来这样感觉可以结束了，我也准备将原来的opa2604+opa2604改为了双jrc5532。不过，大学同学推荐我试试opa1642这块片子，据他说非常好。不过这个片子是贴片的，需要买焊好的贴片转直插的才行。不过就算加上转直插的电路板后价格也就9元，于是买回来试了试。 Nov 24, 2015 · 125dbMonster, buy some Bear brand flashing from a hardware store and cut a tiny piece to fit on top of your OPA2134. FAQ . 1 Absolute Maximum Ratings. My favorites at the moment opa1642 and this one opa1656. The opa1678 looks like a better chip, as well and it's less than a buck. One of them is a linear Oct 10, 2020 · I have also tried opa1642, 1612 and 2134, but they are all slightly inferior to lm4562 soundwise in Aiyima a04. Has anyone had any problems using these as generic drop-in replacements for TL074, LF444, etc? Mar 31, 2008 · OPA2134: When I replaced the OPA627 with the OPA2134 I found the music to be a bit uncomfortable to listen to. opa1611, opa1612 www. I am fond of the bass response and warm tone of the 2134 in my existing designs, but the new application uses phantom power which is limited to a total of 10mA for the I've dialed back the tube volume some which reduced the bloated sound stage to a bit more normalcy. TI 的 OPA2134 是一款 SoundPlus™ 低失真、低噪声精密音频运算放大器。 性能、JFET 输入音频运算放大器 OPA1642 — 双通道 Oct 3, 2022 · You should be fine using the 1uf film caps for input and output coupling. But in terms of single op-amps I have some to try - LT1028, OP27, AD845 and NE5534. Works amazingly well. I'm currently using an OPA1642 surface mount with adapter and no input caps. OPA1642 was clearly beat by OPA1612 being more "rocky" and forward. May 23, 2018 · The first time I did test with opa1642 opa2156(precision opamp version of opa1656) opa1612. But now I have to replace them. cn zhcsdf7c –july 2009–revised august 2014 6. Idea taken from Dicks site. Feb 21, 2022 · My point was that LM4562 is very low on distortion in 20hz to 20khz full range. View attachment 29087 The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. Part Number: OPA1612 Other Parts Discussed in Thread: OPA2134, , OPA1678 Hi Community, TI!!! I would like to upgrade an audio amplifier OPA2134 and the TI site web recommands me to change for a new OPA. Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. jpg. You could try an OPA2134 if you don't want to deal with an SOIC to DIP adapter. How are LME49860, LME49720 etc? Are they drop-in Nov 7, 2018 · 听感：Opa2134是老牌的SoundPlus™运放，美国ar的工程师很喜欢用这个运放，它的声音的中低频很有特点，有一种特别的包围感和氛围感，这在我试听的运放中是没有的，高频不似opa1642那么妖娆，但也有“一定的妖娆”。 Kato, OPA2134 and OPA1652 are both SoundPlus type of high performance audio JFET amplifiers with very similar datasheet specifications and thus you should be able to swap them in SO-8 package (OPA1652 is not available in PDIP). opa1612和opa2604都是优秀的运放芯片，但它们之间有一些不同之处。 失真：opa1612的失真更小，更适合于要求较高的音频应用；opa2604的失真略高，但相应的它的价格也更便宜。 Mar 17, 2019 · Sound is cleaner comparing to OPA2134. NE5532 is a very good amplifier especially for the price ($0. Every amp. I bougth 1 pc for a 0,62$ 5 Specifications. THD+N level of all right channels is almost identical at -94 dBV. Joined Apr 6, 2018 Messages 12,150 The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. One good example is XU09 portable headphone amplifier. com ). #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 better choice Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602. Mar 20, 2018 · D10 has 2 OPA2134 in I/V stage and another OPA2134 acting as a buffer which can be replaced. 25v 至±18v ta = +25°c 且rl = 2kΩ,除非另外注明。 vcm = vout = 中间电压，除非另外注明。 Feb 3, 2024 · 2. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. - Accent moderne sur les aigus, jeu assez aigu - Basses douces et flatulentes - Baignoire typique - basses et aigus sans médiums Other Parts Discussed in Thread: LME49720, LM4562, OPA1654, OP07, OPA2134, TL072, OPA1652 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？ Feb 2, 2014 · The OPA2134 works pretty well and can almost be a drop-in but you need to take care of decoupling. Details were lost. Aug 28, 2023 · 2. Supply voltage, (V+) – (V–) 36 V Sep 11, 2013 · ADA4627-1 is my current favorite sounding JFET op-amp, though it is single, not inexpensive, and would require a DIP adapter. OPA2134 costs an arm and a leg. (The measurements are of two halves of the same DAC chip, one half with NE5532 and the other half with OPA2134. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. only 8MHz. 19 hours ago · Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. OPA1642 sucks 1. However it draws quite substantial current when idle. Nov 2, 2013 · I would like to ask your opinion in replacing OPA2134 for an LME49720 in one DC Servo application? Technically wich one should do a better job? OPA1642 Vio +/-3 Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 , --. 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 OPA1652 and OPA1688) hunting for sources of input capacitance variation. I don't know if the TI version performs better than the JRC version. I tried opa2189 lmh6643(stock), opa2156, opa1656, opa1612 opa1642 opa2140 etc. I have tried muse02, muse 8920 didnt feel they were worth the hype or price. 28 times as much (1. Other Parts Discussed in Thread: TLE2082, TLE2062, OPA2134, OPA1652, OPA1654, OPA1642, OPA1644, LM833 I need to source a replacement for 2 2134 op amps in a new preamp design. Meine Empfehlung ist der gute alte OPA2134, der macht alles besser. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. Apr 6, 2020 · The OPA2134 is very ordinary, I consider it a side step to the NE5532. Two identical gain 11 amplifiers were tested. Feb 19, 2007 · Using a pair of OPA 2134's now vs. ) 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. Dec 3, 1999 · OPA2134 Op Amp Evaluation and comparison Post by Jack Stoner » 18 Apr 2010 5:10 pm On another post I noted how the OPA2604 op amps (what has been used to "mod" the Nashville 1000, Nashville 112 and Profex II) had made a big improvement over the stock factory sound. Member. The OPA1642, SMT-only, is also a good dual BIFET. 15V/us), noise rejection (120db vs 70-80db), lower offset, much closer to rail outputs, etc. Forward midrange (but not as bad when OPA2134 on input stage) Less soundstage (but not as narrow as when OPA2134 in input stage) The sound is completely mixed. It stands out by achieving the industry's lowest voltage noise, distinguishing itself notably from the OPA2134, especially in audio scenarios where minimizing noise is an Nov 26, 2017 · As mentioned previously the OPA2134 in BIFET is a decent performer. Oct 22, 2003 · yes but it doesn't matter when they all have the same reference and also show the typical RIAA noise over bandwidth measurement too . Low noise opamps need to be used with low noise surrounding circuits though so just rolling in a lower noise opamp won't always produce improvement. First of all chips with no good results for today. Ich hoffe es macht irgendwie Sinn. OPA1642 also sounds decent, is reasonably priced, and would also require a DIP adapter. Part Number: OPA2134 Other Parts Discussed in Thread: OPA1678, OPA1611, OPA1602, OPA1642. opa2134. musical. Joined 2005. But I really like the FET's in that position. Vsetko o hifi - SK a CZ diskusie, stereo, konstrukcie, zapojenia, audio, cd, dac, highend, gramofon, sluchatka, hudba, akustika, reproduktory, zosilnovace. as well and I might try a opa2134 I have lying around. The OPA2228 didn't sound good in the DAC, and was the least good in the op-amp gain stage. I did not like it too much when listening to edm / electronic music. The LM4562 has the same slew rate as the OPA134, but it has a gain-bandwidth product of 55MHz vs. The NJM4560DX does not appear to be FET type, though I thought a FET type like OPA1642 would suit this circuit? or maybe OPA1612 which isnt FET like the Nov 9, 2012 · Muses02 vs BB OPA2134 in Topping A30 (single-ended to differential buffer) Rig includes: Topping A30 and D30, HD600s (vintage 2017) with HD650 (genuine Sennheiser replacement part) 3m cable (1. Don't get me wrong. Left channel is 5-10 dB better but there is also more variance between boards/opamps. LT1113 is also usable JFET-input opamp, but with lower slew-rate. Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. So I don't know. georgehifi. 00005%: 5. When I do serious listening test between them, just an A - B testing, not back and forth, I found the OPA1642 creates more noise at upper frequency because of those high frequency details. I have a 1988 carver stereo per-amplifier. I've replaced the old TL082 in my active crossover with opa2134. Mar 17, 2019 · The OPA1641 would be slightly better. Both fet based opamps sounds a little bit more solid in the bass(not quantity but the imaging and the texture). It offers exceptional performance in almost any audio application. Besides a very simple simulation shows his invention very unstable . The NE5532, the go to audio workhorse, has a pretty low input resistance of about 300KΩ. pma; Mar 23, 2025 Mar 19, 2005 · I tested the opa2134 vs the ad712 that were stock. The sound came out "thick" and I could feel the artificially enlarged sound stage. Typically on the order of 10ma or so, which is a no go for phantom powering. Now all the folks are using opa2134 op -amps as the replacement. Goggle bill d mod carver c-1. 5V/µs ~ 0. It's also overkill in the extreme. We also need a real high input impedance. It is a really nice-sounding chip in the right place, but man it is expensive and you can get nearly there for a lot less in trouble as well Na moim warsztacie "psuję" właśnie transport CD Pioneer PD-30AE. Jun 19, 2021 · The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. Gra z zewnętrznym DAC bardzo zacnie. It was recently re-capped and all new guts put in . Odtwarzacz ten nieco już "poprawiłem" w roli transportu, np. 860. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer now, but there many different purposes with different requirements. The OPA 627 is well over price and is bass heavy and it’s not worth the price you pay for it The OPA1612 and OPA827 are much better than any of these but these are SOIC and you’ll need an adapter with experience soldering skills. I no nothing about this. Mar 20, 2018 · I tried on smsl m3 a few months ago but not on d10. 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. A. Aug 2, 2024 · The OPA1642 only 1. The 2134 is the 'budget' IC. Purchased at Amazon. Jan 8, 2017 · Below are THD+N vs. The OPA164x series is the better replacement. 8 vs 1. With this IC I can instantly tell the difference between good mastering/mixing tracks vs not so good and muddy. (Opa2134 is not broken in at all, so it will most likely get better w/time) The base is much better from the 2134, but it does not seem to be as powerful on the output side, but could just be the break-in needed. Choosing between the LM4562 and NE5532 depends on your specific application requirements and priorities. atlechri. The OPA2134 is more a better replacement for the TL072 when you need a FET type. It has the most stable input capacitance vs. How to choose between lm4562 vs ne5532. Hi Team, My customer wants to May 6, 2022 · In my experience, the lower the noise the more 'air' in the soundstage so I would recommend OPA1642 its noise is way lower than OPA2604. GMT+8, 2025-5-20 18:55, Processed in 0. You can read what he says in that link i Mar 21, 2023 · The OPA1656 (gain bandwidth product, GBW=53-MHz) and OPA1642 (GBW = 11-MHz) have a different bandwidth and we would need analyze the complete audio active crossover circuit to analyze stability and determine the issue. SIY Grand Contributor. Can anyone suggest drop-in replacements to OPA2134? I'm looking for a natural, transparent sound vs colored. There's no shortage of candidates here, and the new OPA1656 is a great option, but you could also check out: OPA1642, OPA1678, OPA827, and the newer OPA828, or also OPA2810. But the warmth in mid frequency (1k-4k) is gone. BUT, the LM4562 is also much less expensive. Similar Sound compared to OPA2134 but Bass is little better under control. Currently, I require opamps in the DIP package. So my results I will write here. The sound is much better but there's still something a bit "hi-fi" and "grey" in the presentation. The May 22, 2015 · G'day all, in the light of a recent experience where a DIY phono stage of mine using LM4562's went into destructive oscillation, I think that perhaps the like of the LM4562 are possibly 'too good' and touchy and I now feel more comfortable with the like of the OPA2134 and the NE5532 at least for high quality audio applications. Same with OPA1642 - it's distortion graph is very similar to opa2134. This is how I got a set of these including OPA1642 and OPA827. GMT+8, 2025-5-19 06:03, Processed in 0. Nov 30, 2021 · OPA2134: OPA2134 VS OPA1656. You may pickup a diffence. Other Parts Discussed in Thread: LME49720 , OPA2134 , LM4562 , OPA1611 , OPA1612 请问下，音频处理链路中 为何有些用到了10M 的opa， 而且很多是，类似2604的， 而有些又用到了358， 1M的带宽， 有什么具体 差别吗？ ne5532还有胜算么，功放diy之用最贵的运放，opa2134秒杀opa2604和5532，来听听效果，平民和贵族！ 十元运放PK千元运放，价格相差百倍，音色能够碾压？ ，找寻属于你自己的声音，一部解码四款运放，你喜欢哪款的音色？ Feb 7, 2014 · Not to sure whether its still available, you can register with Brown Burr on the Texas Instrument site and provided you are doing R&D not for military purposes, you can order the OPA1612, OPA1642 on SOIC devices free as SAMPLE for R&D and place them on an adaptor that converts from SOIC to dip 8. Normal audio can use the cheaper OPA2134. The Popping performed OK with the OPA2134 but not much better than my other budget DAC that used a PCM1793 DAC followed by an OPA2134. I plan to get the brown dog adapters and try the opa 627's soon. Noise level is basically the same in LM4562 and NE5532, while OPA2134 is 2 dB weaker. Same with the OPA627 though. One relevant point is that the supply voltage as shown is about +/- 6. I've also seen examples of where someone removes a relatively slow op amp Feb 11, 2021 · Today I swapped TLE2074 in older Apogee D/A converter to OPA1644 (quad OPA1642). Mark Tillotson. Feb 23, 2019 · AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. As long as your not using them for military purposes. Joined 2018. It may or may not sound at all noticeably better than a TL072, it depends on the circuit and application. Mar 17, 2019 · I had almost the same experience after replacing the OPA2134 that followed by DAC (CS4398) on a Popping D30 DAC I picked up from Craiglist. NWavguy also measured njm2068 ns ne5532(4) on D-scope. tnt-audio. 5. But $40-57 each Careful swapping in a higher bandwidth part, they can oscillate in "old" circuit designs and not all parts are unity-gain stable. Dec 22, 2016 · OPA2134 vs OPA2604 vs OPA2107. If you have an account with TI, the OPA 1612 can still be ordered as samples. Oct 29, 2009 · With the OPA2134 the DAC was more detailed but the sound lacked body. The OPA134 (or dual OPA2134) has a very high slew rate, but it can't beat an NE5532 for maximum frequency. Mar 17, 2019 · Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor. It's a better chip. OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. Feb 19, 2007 #7 Sep 22, 2018 · While not necessary in this circuit, I'd recommend OPA1652, OPA1642, or OPA1688 as FET-input op amps instead of the OPA2134 for audio signal path applications. de and as stated on their website, it arrived without a power supply. The TL07x opamps have a very high slew rate, but can't get beyond 3MHz. Great for piano/violin or metal / electric guitar. I have some extra TLE2072 so I may change out the OPA2134 in the buffer positions as there are now new sockets installed in all positions. Apr 19, 2020 · OPA1642 - Slew = 20V/µs OPA2134 - Slew = 20V/µs OPA2604 - Slew = 25V/µs OP275 - Slew = 22V/µs RC4559 - Slew = 2V/µs TL022 - Slew = 0. 4" plug). OPA1642 looks good on paper, better when you read the chatter from TI engineer on the project The OPA2134 is the best FET for the buck at around $3-4 each. Very simple IVC. Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. Easiest is to replace LF351N and LF353N for the OPA134 and OPA2134 just like the shop in Idaho did. Jun 18, 2019 · Excuse me, it's not the OPA1642, it's the TPA6120A2 vs OPA2134, which one is better for audio, which has better quality, thanks. 2vdc. Part Number: OPA1656 Other Parts Discussed in Thread: OPA2134, OPA2604 The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. 5). opa1642 is actually really good. Your diagram contains 2xADA4898 and LME 49710 as a buffer so it is clearly NOT a D10 diagram. Jun 13, 2016 · ポータブルアンプのオペアンプ、オペレーションアンプの交換の実験です。なかなかオペアンプの聴き比べは手間がかかるもの、今回は安価な価格帯のオペアンプから、様々な聴き比べをしていきます。 Feb 6, 2018 · 最近オペアンプ交換が楽しくて色々試してみました。個人のメモを兼ねてレビューしてみます。環境は、CD取り込みからハイレゾ化まで手軽にできるCurioSoundを使用してCDから取り込んだデータを96kHz 24bitのflac形式で保存。 "安いのにすごいSHANLING M2sを買いました"で紹介したM2sからラインアウト Oct 8, 2017 · So I just blew up 5 Burr Brown OPA2134 due to bad labelling on the PCB (Ok I was also supposed to be more careful). Bandwidth, drive current and THD are the relevant parameters. Measurewise there's not really a difference comparing OPA2134. At the risk of immediately coming across as exaggerated and/or hyped -- the "battle" was simply an epic slaughter! 3 days ago · Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. The OPA2134 is not harsh. I have used the opa1642 as a replacement. Except opa1656 rest of opamps are available on rsdelivers. It needs an adapter though. This is close to the minimum supply voltage for any of these devices (including the one's fitted). Eric Mo Intellectual 910 points Part Number: OPA2134 Other Parts Discussed in Thread: OPA1656, OPA134. Teraz zastanawiam się nad kwestią Aug 2, 2024 · In a final step I am working on soldering some OPA1642 into adapters and over time will replace the remaining OPA2134 opamps with the OPA1642 to reduce the current draw. OPA2132 is not identical to OPA2134 " except offset" as Groner claimed. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. Different package is so workaround was needed. Avoid LM4562/LME49720 and OPA2134/2604 if you do not want to re-engineering circuitry to make it stable. It's a fet input Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136 I use these amplifiers for pro audio. Edited November 28, 2015 by mwhouston May 19, 2004 · My configuration is PCM1704 to twice first-order inverting amp with series R and R||C feedback. GMT+8, 2025-5-18 18:15, Processed in 0. ron-c Addicted Member. Jun 18, 2016 · 表面実装の2回路入りオーディオオペアンプです。OPA2134やOPA2604の後継品としてOPA1642、OPA1688とともに指定されています。 Oct 17, 2023 · The problem with that one is it needed an external power supply because it drew more power than Phantom Power can provide. amplitude for all opamps (with 560 ohm shunt resistors). Posted by KanedaK (A) on December 22, 2016 at 16:38:35 . which is fine for most uses, but not as an impedance converter. Likewise I would have thought that an OPA2134 is an OPA2134! Feb 16, 2021 · 折角買ったので好みの音になるようにDAC-SQ5Jのオペアンプを色々と変えて、これが一番かなと思える組み合わせが見つかった、と思った矢先に先日のブログに書いたネット配信の96kHzの音源を聴いてしまい、更に先が有ることを知った。 CDを何とかあの音に近づけたい！ と思って、今度は発売日 May 9, 2014 · HIFIDIY论坛-opa2604,2132,2134： bb公司的经典三大运放！声音是一个比一个好。 这是大多网友们用得最多的三种吧！ Feb 1, 2018 · By the look of the circuit diagram, any common low noise dual OP amp will fit. The OPA1642 is under $2 each. vs Temperature TA = –40°C to +85°C ±2 µV/°C vs Power Supply (PSRR) VS = ±2. ah so much other untested opa's 1678 still on my list ina1620. Oct 23, 2005 · OPA2134 versus LM4562 The National LM4562 SMOKES the OPA2134 in specs for THD,IMD,CMRR, and Noise Figure. Nov 6, 2024 · Comparative Analysis: OPA1656 vs OPA2134 The OPA1656 is crafted with a high-voltage CMOS architecture, augmenting its adaptability while also elevating its noise performance. 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。 Mar 22, 2022 · I’ve known about the OPA 1612 when they were 1st released. ナチュラルビューティー。脚色がほとんどない、いわば素肌美人である。音の抜けが良く、ジャンルを問わず使える感じ。超高域の解放感はもう一歩か。でも、充分リファレンス用途までいける。単価も音質の割に破格と言っていいだろう。 The OPA2134 (and OPA4134) coming from Burr-Brown have some really nice slew rates (20 vs. 159712 second(s), 18 queries . I can't trust a guy claiming unmeasurable -180db thd for his " famous" op amp. Details; Discussions; Posts; Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. 2005-10-23 12:45 pm #2 2005-10-23 12:45 pm #2 AD797 Hi. OPA2134's input JFETs are not dielectrically isolated, and therefore exhibit a changing input capacitance with variations in common mode voltage. If you want to swap the op amp for a FET input you can remove the input coupling capacitors and replace with a jumper. Today I got some packege of chips from post and made some test with it. Edit: It is not always the best solution implementing the fastest OPAmp for I/V! Jul 5, 2006 · LT1057 (JFET input) also has body and a somewhat laid-back presentation, which is worth considering as a drop-in replacement for the OPA2134 in most applications. 6 KB · Views: 200 Last edited: Dec 19, 2023. ^^'-----Malheureusement, je ne peux pas recommander l'OPA1642. 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 May 25, 2011 · OPA1642 (JFET but otherwise similar to the 1612) These will have to be mounted on browndog adapters. 2020-01-05 11:05 pm #15 2020-01-05 11:05 pm Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. the stock NECs. I've ordered some opa2604's from ebay still in transit to play with. May 17, 2017 · OPA2134/32 можно попробовать, он в какой цепи стоит? Для связи: Skype и почта на моём сайте в Jan 30, 2019 · Both are old in the tooth opamps from the later 1980's/early 1990's. w sekcji zasilania (kondensatory, diody soft-recovery zamiast mostków). Audio Asylum - Tweakers' Asylum - Tweaks for systems, rooms and Do It Yourself (DIY) help. Any futher recommendations? my favs 1642/1656, 1612, lme49720na 2xopa627bp, Feb 1, 2006 · OPA2134 is a far easier drop-in replacement for the TL072. 158871 second(s), 18 queries . The 2134 is an FET design, however, for those who prefer that, and it does have a greater voltage swing possible--- it can be operated on =/-18v; the 4562 is speced only to =/-17v. OPA2134, TL072 and LM1458. muz fnif sigahan couzqz kqxn ejes ixi aettkrpwq drttnal spal