Opa1656 vs opa2134 vs opa21. Anything other than these values and they're either fake or damaged (or both). The opa1656 this time is smoother than the opa2156 in previous test and opa1612 has better bass than previous. It has the most stable input capacitance vs. Those are fine. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. 8 mA, for the OPA2134 typ. Mar 17, 2019 · Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. Every amp. Opa1656 has good phase response at high frequency. Though I use it only occasionally mostly for tests, and it has not operated more than a couple of hours summed, the right channel started to emit high frequency hiss noise time after time, without any special reason, even if nothing is connected to the input. When the original OP is Bipolar(like NE5532 etc) we can most always replace with FET or another similar Bipolar OP. I don't like OPA2134 much, so something like AD8620 would have been another good comparison to Burson. g. Oct 31, 2012 · MUSES 8920 vs Burr-Brown OPA2134 Home. In other words, OPAx132PA and OPAx132UA (standard grades) are equivalent to OPAx134, which does NOT have a high grade. It was recently re-capped and all new guts put in . 1F X7R on the backside with the shortest possible lead length. 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, low-noise 36-V JFET precision operational Mar 11, 2003 · 1. OPA2134 is more stable, as it is not too fast for Audio. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Mar 17, 2019 · The OPA1641 would be slightly better. Jun 6, 2012 · 7 mA quiescent current is typical of the OPA627, for the OPA2132 it should be typ. 6SL7 tube SRPP gain stage with voltage shunt feedback. With that being said, there will not be a huge noise performance difference between OPA1656 (~4nV/rthz) vs OPA1678 (~5nV/rthz) when the thermal noise is already 11. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 OPA2134 is good but it consumes more power than normal (8 to 10 mA per IC) and it is not rail to rail output. 4. But now I have to replace them. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. Don't let power supply current limitations get in the way of performance. Another way to say it: JFET OPamps like OPA2134 can replace most any other audio opamp 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). Posted by KanedaK (A) on December 22, 2016 at 16:38:35 . For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. CMRR is not a big issue. Now all the folks are using opa2134 op -amps as the replacement. Dec 10, 2021 · This is my first time doing anything DIY with audio. It is difficult to say which one is better. Hi there probaly a simple question maybe not. I listened to OPA2134, LM4562, and NE5532, and OPA2134 sounded the best. TI has characterized the THD vs Rs for a lot of its recent devices, but alas not the OPA1656 (at least that I could find). Dec 6, 2018 · I would recommend OPA2134 or OPA134 and if you have money the OPA627 or OPA637. May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. How are LME49860, LME49720 etc? Are they drop-in Oct 30, 2022 · 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. If a FET-input amplifier is required for low bias current (such as for a phono preamp), you might consider the OPA1642 or OPA1678. opa1655 , opa1656 SBOS901C – MARCH 2019 – REVISED SEPTEMBER 2022 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Sep 14, 2021 · Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. And it is a JFET opamp, which is always preferred by myself in the positions where slightly higher voltage noise of the opamp is negligible, like here. just replaced my already very good opa2134 on my dac analog pre-output with the opa1656, and not only it keep warmness of the opa2134 but feeds more details to my Naim amp hifi system , which is amazing ! so one more time thx G. Part Number: OPA1656. I've replaced the old TL082 in my active crossover with opa2134. Jul 4, 2009 · Marketing 101 by having one of the engineers on the diy threads because it creates interest (especially from spec crazy diy-ers who “need” the lastest and best specs and use “word of mouth” via the audiophile threads to push cost up by popular demand) They do outsource them to official distributors ie Mouser, Digi-Key but you have to buy them in bulk (we’re talking 100s to 1000s) and Sep 14, 2021 · 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. This video title is; 2Which OpAmp is Better for 20W Class A Amplifier - OPA2604 vs NE553 Mar 17, 2019 · I measured again the noise of OPA1656 vs OPA1642. It offers exceptional performance in almost any audio application. The FET-input architecture achieves a low 2. Probably the circuit is better than the first one or something went wrong or I was just imaging all of those. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. May 30, 2007 · If the orginal OP is a FET (like TL072, OPA2134 etc) we may be careful sometimes NOT possible to replace with Bipolar (like NE5532 etc). OPA2604 is one of the few op-amps having +24 -24 max supply voltage. I can't say for sure. We get lower current noise and better EMI resistence. Dec 22, 2016 · OPA2134 vs OPA2604 vs OPA2107. It appears that the May 23, 2018 · The second time I did test with opa1656 and opa1612. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. Oct 2, 2020 · I want to drive a non-inverting OPA1656 from the wiper of a volume pot -- which means a range of source resistance for the OPA1656 from 0 to <del>Rpot/2<del> Rpot/4. 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 Mar 17, 2019 · Hi, Would like to thanx Johnc124 for all the good advices , and all members to this thread. 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, low-noise 36-V JFET precision operational Mar 17, 2019 · OPA1656 rolling I tried in all cases to bypass the rails with a 0. The OPA1688 even beats it on noise. OPA2134 gain stage with voltage series feedback. Nov 8, 2006 · OPA2134 and OPA2604 are very close in data. I'm still waiting for OPA1656 in the mail. OPA2604 is a little bit faster. (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. 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. But deep bass and transients seem more punchy in the OPA2134. The AD826 seems to be smoother than the OPA in the voice range. who builds large PA speaker systems. I had no oscillations or instability with the OPA1656. Same with the OPA627 though. Nov 30, 2021 · The output swing for Aol should be considered as it is different between the two devices. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. 5mV vs 2mV, respectively). OPA2134 costs an arm and a leg. 25 V to ±18 V (4. max Vos of 0. A opa2134. It may or may not sound at all noticeably better than a TL072, it depends on the circuit and application. 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。 Sep 18, 2021 · The OPA1656 is a high-voltage CMOS with the lowest voltage noise in the industry. This device is ideal for low and high impedance applications, such as a high gain microphone pre-amplifier, due to the low voltage and current noise. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. However, if you want the best possible stereo imaging and resolution with regard to phase critical stereo information, much lower distortion is in order. It performs admirably in virtually all audio applications. the O2 dScope measurements that NwAvGuy posted. Good decoupling, PCB layout, and circuit topology might be dominant. Sep 27, 2019 · The OPA1656 operates over an ultra-wide supply range of ±2. 3. Goggle bill d mod carver c-1. Waktu dirilis, seri OPA165X ini digadang2 menjadi pengganti keluarga OPAX134. 000. 3 MHz. ••• Apr 17, 2021 · I will show the difference between the OPA2604 vs the NE5532 OpAmp. A quick snapshot of the OPA1656 performance specs: The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. Depending on the actual application circuit, there are alternatives with better noise performance. Load was 1k but I'm planning on changing that to something easier like 2k and retesting NE5532 just for fun. Portable Headphone Amps. I was just curious what people's thoughts were for that opamp, and if they had any other…. com/products/op-amp-chip-muses02-opa2604ap-opa2 Sep 21, 2015 · The THD+N of the 1688 should be better too, best I can tell comparing the datasheet graphs vs. (Came with the other DAC an Aune X8 XVIIIth. Alessandro MS-1, Sennheiser HD595, Audio Technica A500, Koss KSC-75, Etymotic ER6i, Sennheiser HD201 Mar 22, 2022 · These are probably among the two highest of the best sounding dual opamps around today. It's best use as an alternative to opa1612 when noise is not a big concern. Equipment Forums. 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. I don't care about listening tests or something else, just want to use the technical better one in my amp. 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. OPA1656 Nov 25, 2015 · Im interested in op amp rolling for my amp since its not expensive to try out and I was surprised to find a lot of variation between them, the amp has a very simple circuit so my results could be more siginificant than with other amps. 4 mA, max. I no nothing about this. Jan 10, 2016 · I talked yesterday to my buddy Greg B. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. Thanks in Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Two identical gain 11 amplifiers were tested. com with a TI insider involved. Parameter-, Bestell- und Qualitätsinformationen finden 4 4. 5 ± 10 ± 8 ± 6 ± 4 ± 2 0 2 4 6 8 10 Common-Mode Capacitance (pF) Common-Mode Voltage (V) C004 OPA164x Family Traditional JFET-Input Amplifier Mar 25, 2022 · Conclusion of OPA2134 VS NE5532 The OPA2134 is a Fet Input op-amp, while the NE5532 is a Bipolar Input op-amp. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. 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. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. PRODUCTION DATA. 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. That seemed like a reasonable target for the supply current of the OPA1656 as well. Two cases were evalutated – in a I've dialed back the tube volume some which reduced the bloated sound stage to a bit more normalcy. Oct 5, 2005 · 2134 vs 2132 looking back i'd go with the 2134, it's so much cheaper and sounds the same. The schematic, spectrum and results are given below. 4 nV/rthz. Mar 17, 2019 · That's interesting, because in my little opamps rolling experiment it did not do very well. Although many people dismiss the NE5532 as an obsolete component and try to locate a replacement, the NE5532 is still adequate for most applications. Di salah satu gambar ada sedikit overview dan perbandingan OPA1656 vs OPA2134 yang saya comot dari datasheet-nya. Apparently it's harder to work with, but i haven't gotten a chance to try it yet. OPA1642 is its replacement despite the lower type number. Forums. ) He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. . 5 7 7. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. 5 6 6. MUSES8820 is the best, IMHO. as well and I might try a opa2134 I have lying around. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. I have a 1988 carver stereo per-amplifier. In fact, dual OPA627 on Browndogs would have been something to consider as well. I can't really hear difference this time. The voltage noise figure for the NJM4556A *should* be lower, being bipolar input vs. Other Parts Discussed in Thread: OPA2134, OPA2604. Using hd600s and 400is to test them Ive compared the Mar 17, 2019 · 3. I've ordered some opa2604's from ebay still in transit to play with. 5 mA. Apr 6, 2020 · The OPA2134 is very ordinary, I consider it a side step to the NE5532. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. Just did an A/B with 2 opamp buffers on my Hypex NC500 monoblocks, which I normally use with no buffer, as the dac has enough gain to drive the NC500 modules direct. The sound quality of an opamp is strongly dependant on it's implementation. It has a very good dynamic range and a low level of harmonic distortion. 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. But I really like the FET's in that position. I used 10 or 12 in my preamp rolling project - never a problem with Feb 1, 2006 · OPA2134 is a far easier drop-in replacement for the TL072. To check if they will match the previous ones that were made with balanced 10x paralleled op-amps. May 15, 2022 · Buggle2 Riaa board. 5 V to 36 V) on 3. OPA1656 1/2 OPA1656 Input Output Pad Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. Any futher recommendations? my favs 1642/1656, 1612, lme49720na 2xopa627bp, ••• Jan 28, 2018 · 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 a Burson V6 Classic (thanks to them for sending me an evaluation). Easiest is to replace LF351N and LF353N for the OPA134 and OPA2134 just like the shop in Idaho did. FET on the OPA1688, but strangely it is actually higher at 10nV/sqrt(Hz). Apr 21, 2019 · vs Burson V6 Vivid 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. My favorites at the moment opa1642 and this one opa1656. 5 5 5. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. Two schematics in parallel and eight in parallel for both 1656 and 1642 were measured. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. Talking about AIYIMA A07, it will end up in a dustbin soon. Are there any other Is OP Amp swapping the key to better sound quality or a complete waste of time?Op Amps: https://fosiaudioshop. --lme49722 lme4562 lm4562 opamp is very good sound ,higher ratings than opa2134 -but not as Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. AD826 used instead of the the OPA2134. ah so much other untested opa's 1678 still on my list ina1620. Since I am not interested in the V6 Vivid Dual that it comes with. Feb 10, 2012 · The 5532/5534 is an excellent sounding and very durable work horse; the OPA134 series can be adequate too. OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). I tried the 1656 in there but didn't feel it added anything. Thread starter theque; Start date Nov 21, 2012; Tags headphone-amplifiers TI-Produkt OPA1656 ist ein(e) Burr-Brown™-Audio-Operationsverstärker SoundPlus™, extrem rauscharm und verzerrungsarm. common mode voltage that I've measured on any op amp. Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 ,--. 2. 5 metre cable at 33. So I can use any one of these ( one at a time !). 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, low-noise 36-V JFET precision operational Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Mar 19, 2005 · I tested the opa2134 vs the ad712 that were stock. (NOTE: We once owned a recording studio together back in the late 1970's through the early 1980's. Jan 7, 2021 · So considering NE5532, LM4562 and OPA2134, OPA2134 gives best measured results in AIYIMA A07. Ini adalah salah satu Op-Amp FET input keluaran Texas Instruments yang masih anget karena kalo tidak salah baru keluar tahun 2019 kemarin. OPA2134 is probably a good choice in general. Jul 29, 2002 · Haha, in fact, it makes you wonder if a "better" opamp will yield just as much (or more) improvements over Burson. +Gain Bandwidth. I would say it depends on what circuit. It needs an adapter though. Feb 11, 2021 · 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. This OPA1656 OPA from Texas Instrument offers very good performances for audio use. Part Number: OPA2134 Other Parts Discussed in Thread: OPA1678, OPA1611, OPA1602, OPA1642. I plan to get the brown dog adapters and try the opa 627's soon. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. The sound is much better but there's still something a bit "hi-fi" and "grey" in the presentation. I've been doing a bit of filtering with an OPA2134. Can anyone suggest drop-in replacements to OPA2134? I'm looking for a natural, transparent sound vs colored. 3V inside of each supply. Composite amplifier is one of the best application with opa1656. The main difference between OPAx132 and OPAx134 is in DC precision of the high grade of OPAx2132P/U and OPA2134 (e. ntwxpyujratrgcmvbongmweoprhgpusewvlgwgsdrbjbotf