Opa1656 vs opa2134 sound quality
Opa1656 vs opa2134 sound quality. Talking about AIYIMA A07, it will end up in a dustbin soon. Mar 17, 2019 · Again, it's the circuit topology that is the most important to get the best sound out of any op-amp. Feb 11, 2021 · I last tried the circuit with OPA2134 in year 2000, and with TL074 in 1992. . Part Number: OPA2134 Other Parts Discussed in Thread: OPA1678, OPA1611, OPA1602, OPA1642. the sound difference was what I imagine rolling a tube sounds Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Now, we run through a hand calculation to find the total noise of a simplified audio system. Years ago the MUSES 01 was $35 in Japan and it was at the time way ahead of it's time. If there are more complicated parts (especially active parts) in the FB path, a faster OP can be a problem. I have a 1988 carver stereo per-amplifier. 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. 3V inside of each supply. Double-blind AB we also preferred the OPA2134 at the listening position, especially with the EQ in heavy use. There is no practical audio program material which will have 24dBu (which is what 17. Craig 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'm not sure what's better on paper but I think certain combinations of DACs and opamps can work better than others. We add the following graph below to our audio device data sheets to show at what impedance the noise will be dominated by input current noise*source resistance vs. So I don't think there is a singular correct 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. I no nothing about this. 1. Load was 1k but I'm planning on changing that to something easier like 2k and retesting NE5532 just for fun. 5Vrms signal, 80-kHz measurement bandwidth. The manufacturer claims it has superior sound quality, due to its JFET input stage. • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. I don't care about listening tests or something else, just want to use the technical better one in my amp. It was recently re-capped and all new guts put in . It's a killer OpAmp, and better suited to May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. 3 mV 0. It has the most stable input capacitance vs. Sep 18, 2021 · The OPA1656 is a high-voltage CMOS with the lowest voltage noise in the industry. The first 3 plots below are the analyzer in loopback at -10dBV, -1dBV, and +3dBV. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety %PDF-1. The A07 now gives a very pleasing, laid back and an analog, almost vinyl-like sound quality to the music! Bass performance is also quite noticeably improved as well. Goggle bill d mod carver c-1. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. Apr 21, 2019 · vs Burson V6 Classic. OPA1656 had respectable slew rate without slew boosting so I opted to forego that circuitry in the audio part. The main reason I can't perform the test is because the current setups of mine are all soic8 package. I recently got a Matrix Audio M-STAGE HPA 2C classic with an OPA2134 and it was a little harsh on top. Regrettably, but not surprisingly, no evidence is given to back up this assertion. 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. Mar 17, 2019 · About OPA1656 DC output offset: depending on gain, a low level circuit with the OPA1656 can show a few mV as output offset. But once it comes, I'm excited to try to listen to that. Find parameters, ordering and quality information Feb 11, 2021 · The OPA2134 and LM4562NA measured almost identically but both above NE5532. Superior Sound Quality; True JFET Input Operational Amplifier With Low Input Bias Current; Low Noise: 5. 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. Also, a LME49720HA that costs 5 times as much as the PDIP or SMD version should also be interesting in terms of cost calculation. The V6 classic was a bit slower on the attack than the SS360x which gave it a bit smoothed over sound compared to the SS360x. Perhaps OPA1678 will also not be the bottle neck and perhaps will measure similarly to OPA2134 or LM4562NA. TI’s OPA1656 is a SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier. Mar 17, 2019 · A quick snapshot of the OPA1656 performance specs: 2. It offers exceptional performance in almost any audio application. 6 fa/rtHz broadband current noise. OPA2134 is more used and more liked, than almost any other JFET op ( Maybe still TL072 is most used, but it is far from OPA2134 in quality ) ----- OPA2134 is probably the most used DIY Audio op, all categories. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. Another parameter that I noticed was the voltage. Dec 2, 2010 · The sound of both OP amps are similiar but the LM 4562s show their superiority with very high quality source material. 00005% at 1 kHz Mar 25, 2022 · The OPA2134 is a low-noise, ultra-low-distortion operational amplifier designed specifically for audio applications. The power supply output is +/- 19. Mar 17, 2019 · To start, OPA1656 is definitely not a replacement for OPA1622, the two parts were designed for with very different applications in mind. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Mar 17, 2019 · As compared with the OPA1656 which is 24V/us. Mar 17, 2019 · The OPA1641 would be slightly better. Even when it would it is really small and you can't say which is better. 1nV/√Hz Noise, Low THD and Precision. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. Double blind AB, the TL074 circuit had audible hiss from the speaker, and the 2134 circuit did not. May 6, 2022 · Lets take a look at the NE5532 op-amp, used in audio products everywhere since 1979 and it costs about a $1. Is link a schematic, but the only one I can find isnt the best quality and needs to be zoomed in on. 53 MHz gain bandwidth product, 24V/us slew rate. Nov 25, 2015 · In the other case of this amp that I built rolling the op amp completely changes the sound, going from the original ne5532 to the lm4562 refined/changed the sound to a point where I stopped thinking of the amp as fun project and started using over the o2 (though only with the 400i). For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. Each part has its specific specs tailored for the application. Dec 6, 2018 · The OPA627 is mainly good for very low input bias - usually no need for this with audio. -131 dB THD+N at 1kHz, 600 ohm load, 3. OPA1656 also has a pole-zero pair in the open loop gain curve to boost the open loop gain at audio frequencies (hence the 53 MHz gain bandwidth product). com/products/op-amp-chip-muses02-opa2604ap-opa2 • Professional audio mixer/control surface • Guitar amplifier and other music instrument amplifier • A/V receiver • Bookshelf stereo system • Professional audio amplifier • DJ equipment • Turntable • Special function module 3 Description The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio Feb 1, 2006 · I know that the inputs use a Burr Brown opamp which is higher quality than the TL072 but i am not sure which Burr brrown they are using? If improvements can be made to make this console sound better with regards to the summing that would be well woth an extra $500 to me. No regrets with this amp whatsoever after rolling. I wonder how the sound of CMOS would compare to the JFET? Mar 17, 2019 · Hi, Would like to thanx Johnc124 for all the good advices , and all members to this thread. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. 8/-5. TI’s OPA1612 is a SoundPlus™ Audio Operational Amplifier with 1. I used though the better TIs in output stages of middle class DACs as these benefitted from a more round /warm presentation with less details, as that masked their weaknesses and in fact The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. common mode voltage that I've measured on any op amp. For this example, we are using the OPA1656 in a non-inverting configuration with a gain of 40 dB or 100V/V. Now all the folks are using opa2134 op -amps as the replacement. Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Total Noise of OPA1656 vs OPA1612. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. For several reasons: Firstly I don't think that would be difference in sound quality. CMRR is not a big issue. May 19, 2017 · Compare using a fet opamp, opa1656 vs a opa2134, I see little reason why one would choose a opa2134 for a new design, maybe that's why TI asks so much because they want you to use the new tech, but it's probably the cost of the mfg process for that tech vs the new processes. The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. The question is rather moot anyway. Mar 17, 2019 · Many high-end audio manufacturers still use THT technology and avoid SMD at the sound-relevant points. 75V peak corresponds to) at 20kHz. Jan 7, 2021 · So considering NE5532, LM4562 and OPA2134, OPA2134 gives best measured results in AIYIMA A07. OPA2134 measured the best. Details are better on the SS360x while Bass may have had slightly better slam on the Classics. I threw an NE5532 and it helped smoothen it out quite a bit. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. 00008% applications. 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. Nov 30, 2021 · The output swing for Aol should be considered as it is different between the two devices. 4Vdc and then sequentially put in the dual audio opamps which I happened to have in my inventory into its preamp stage socket: Total amp DC offset and THD LME49720 (TO-99, Green trace) -1. 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. The applications that slew rate limiting is important to take into account is using the device in non-audio applications. Sep 27, 2019 · The high bandwidth and high open-loop-gain design of the OPA1656 provides a low distortion of 0. Of course that is because in LTspice all instances of the device are identical. 000035% (-129 dB) at 20 kHz and improves audio signal fidelity across the full audio bandwidth. TI-Produkt OPA1656 ist ein(e) Burr-Brown™-Audio-Operationsverstärker SoundPlus™, extrem rauscharm und verzerrungsarm. 1 nV/√ Hz at 1 kHz; Ultralow Distortion: 0. Is OP Amp swapping the key to better sound quality or a complete waste of time?Op Amps: https://fosiaudioshop. But that does not say anything about the SQ. 004% @20KHz The above parameters are insignificant to the audio level variations imposed by substandard audio recordings, room modes and compromised loudspeaker placements in the average home, some of these variations could Mar 17, 2019 · I listened to OPA2134, LM4562, and NE5532, and OPA2134 sounded the best. 3 MHz. Thanks in Aug 22, 2007 · I had a Rotel RA-930AX at hand which I had recently upgraded, reduced the opamp supplies to +/-16. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Jan 28, 2018 · I used the LME49860 in a FX-Audio DAC-X6 and it was very good. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. The OPA165x Op Amps offer a FET-input architecture that achieves a low 2. OPA1612 sounds better than any transistor preamp I've ever heard and better then my own 6N6P 2 case -no barrels hold- 36kg monster preamp with a 100% double blind test win rate. This device features excellent output current drive capability, offering rail-to-rail output swing to within 250 mV of the power supplies with a 2 kΩ Jul 11, 2022 · I am wondering if there are certain parameters that will make popular opamps like NE5532, LM4562, TL072, OPA2134, and others, to give the best performance as far as THD and sound quality? When I studied datasheets for those opamps it seems that the lowest THD is achieved when R load is 2k. I would not classify the OPA1656 as a high speed amp in this context. 8 mV 0. We are also using 4 days ago · Hello ! I'm replacing the opamps on a Rotel RC-850 phono stage. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. It is a simple bipolar PS using a 20V zener reference and Mar 17, 2019 · I am excited to see if anyone wants to try to use it for audio I am working on an audio reference design using the DAC11001A that I hope to release on the web in the next few months. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Find parameters, ordering and quality information • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. Opa1656 has good phase response at high frequency. This particular analyzer already produces quite a bit of 2nd, 3rd adn 4th harmonics itself that have to be subtracted out of the results. OPA134, OPA2134, OPA4134 SBOS058A –DECEMBER 1997–REVISED OCTOBER 2015 OPAx134 SoundPlus™ High Performance Audio Operational Amplifiers 1 Features 3 Description The OPA134 series are ultra-low distortion, low-noise 1• Superior Sound Quality operational amplifiers fully specified for audio • Ultra Low Distortion: 0. Could it be possible to replace the LF351N and LF353N with the OPA134 and OPA2134? I really wish I could get more info on this. 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. thermal noise (below for 1656): This shows that no matter the source resistance in the OPA1656, the noise will be dominated by the thermal noise of the source resistance above ~400 Ohms. I'm still waiting for OPA1656 in the mail. And I would like to know what people think of the OPA1678 sound signature in DAC filter applications. Classics are a bit warmer while SS360x is a bit brighter presentation. 4 %âãÏÓ 2 0 obj >stream xÚí=ÛŽ ·‘ïý ý à´y¿ 3Gš A ¬# û ìƒ µ e%9ò:0ò÷Ë;«Hv7ÏÌ8›Å*Îè ²É"«X7 «y¾¬t%î¿‹ÿЖ ù´~Iut•jS–¯:T óoëÝÝúÍ ¯¿{í ¾zµ>¼¾. Aug 26, 2020 · A pair of *genuine* OPA1656's is the consummate and necessary upgrade for it's stock NE5532 opamps. It depends very much on the circuit if a faster OP can be used. Sep 14, 2021 · Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. The input noise voltage is 8nV/√ Hz, almost twice that of the 5532. The FET-input architecture achieves a low 2. Nov 8, 2006 · OPA2134 is more stable, as it is not too fast for Audio. OPA1656 Sep 30, 2010 · G'day mate, yes it's a strange one, as the original OPA2134's in use sounded rather 'dry sounding' to me, if that makes any sense! 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. This feature, in combination Figure 3-4. My best guess is the RC4558P. Today, I still have the same 2020 amplifier and the opa1656 sound much, much better at a fraction of the cost. PRODUCTION DATA. That was the circuit where the OPA2134 sounded better. It's best use as an alternative to opa1612 when noise is not a big concern. com with a TI insider involved. On lower quality pressings it is a level playing field and the OPA2134 is almost identical to the LM4562. It is a bit of a science project, but I am seeing nice audio performance and I am using John's opa1656 as the primary output buffer. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. The low voltage noise combined with the low current noise make this device great for low and high impedance applications such as a high gain microphone pre-amplifier. Mar 17, 2019 · The good news is that in audio, impedance levels are relatively low so parasitics need to be larger to have a bad effect, and most audio opamps are not really high speed. 2V inside the negative rail and 2. The replacements (LME49710NA) have a lower maxium voltage spec, 36V rail-to-rail vs the 44V of the preamp's stock NE5534 and NE5532. Aol for the OPA2134 with a 600 ohm load has an output swing that is 2. 4V. Thank you, Dan ••• May 23, 2018 · Sorry I can't compare the sound of these opamps. Feb 11, 2021 · The OPA2134 opamp The OPA2134 is a Burr-Brown product, the dual version of the OPA134. >100mA output current. $´üé‡åáÝúÍ£ë#×wßW˜ÜnL¬Tm\ðõݧõÏw„pæþø«U W`‚ ù@ uŸT¹?MÜSWïêÄÕýÝ»?ÿÜW»za\{é>ûdñ»û? Mar 17, 2019 · blue spectrum - 2 x 8 parallel OPA1642 , green spectrum - 2 x 2 parallel OPA1642 orange spectrum - 2 x 8 parallel OPA1656 , brown spectrum - 2 x 2 parallel OPA1656 Based on these measurements I expect the noise of a single OPA1656 to be 39nV/rtHz at 10Hz. 9nV/√Hz voltage noise density and 6fA/√Hz current noise density. 0026% LM4562 (DIP, Blue trace) -1,2/+2. It performs admirably in virtually all audio applications. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. Parameter-, Bestell- und Qualitätsinformationen finden Mar 17, 2019 · Here is a copy paste of the result for OPA1656 OPA1656 In the past I have to say I prefered widely the AD precise sound vs the softer traditional TI sound. but perhaps the mixer will sound fantastic without any mods. Hi there probaly a simple question maybe not. Sep 21, 2015 · A (2x 9V with real ground) battery powered audio amplifier using the OPA1688 and the new QA401 audio analyzer. The improvement in sound is apparent and the sound is a bit more open on the very high quality source material. Sep 25, 2019 · Texas Instruments OPA165x Ultra-Low-Noise Audio Operational Amplifiers are designed specifically for audio and industrial applications where maintaining signal fidelity is crucial. The images I post get fairly degraded. Those are fine. Mar 17, 2019 · Also, I typically preferred simplicity in the op amps I developed. 9nV/rtHz broadband voltage noise. I routinely use OPA1656 and related on adapters without any issues. 4 Calculating Voltage Noise at the Output. 5 metre cable at 33. OPA1622 was targeted specifically for headphone applications, while OPA1656 is a more general purpose device meant to address analog signal processing in line level audio circuits. 5V inside of the positive rail . 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. I have a circuit with two OPA1656's and it so happens that one offset is subtracted from another and almost cancels - in LTspice. Composite amplifier is one of the best application with opa1656. To deliver improved sound quality and speed for exceptional audio performance, a real FET input stage is included. Noise and distortion wise OPA1641 or OPA827 perform better. lwi lesnnjk lpg bmmamu pxhobl kholqbt eaewt wpeypty gtvdz jytz