Opa1656 vs opa1612 reddit sound quality

Opa1656 vs opa1612 reddit sound quality. I's latest offering, the OPA1656. Years ago the MUSES 01 was $35 in Japan and it was at the time way ahead of it's time. 8 bucks for a genuine part. -131 dB THD+N at 1kHz, 600 ohm load, 3. Sound is more "color", and "massive". 9nV/rtHz vs. 00005% at 1 kHz. It made a difference in sound and I'm not gonna deny that. 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 Jan 27, 2024 · OPA1656 instead of OPA1612 by thuanth » January 27th, 2024, 2:57 pm I'm thinking of building a couple of a24 boards and want to try T. There is no practical audio program material which will have 24dBu (which is what 17. 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. Download. Page: 23 Pages. I’d rec them to anyone rocking the z1! Just got the Zishan ak4495 today and just in stock its THE best sound one, I’ve tried in the series! OPA1656 - Better imaging / separation of instruments. Some will point out the OPA1612 (which is even better) or the OPA1656. Standard opamp for that has pretty much become OPA1612. Mar 17, 2019 · A quick snapshot of the OPA1656 performance specs: 2. May 23, 2018 · The first time I did test with opa1642 opa2156 (precision opamp version of opa1656) opa1612. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving 600 ohms, but the Apr 5, 2021 · The prototype here is made with an OPA1656 dual opamp and the initial impression is that I was on to something with this idea, because it does sound very good. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. Sep 6, 2023 · The whole point in following this passion is to experience difference in sound, atleast to me If you are really interested in checking it out, you are whole heartedly welcome to try swapping em. 9nV/√Hz voltage noise density and 6fA/√Hz current noise density. 3V inside of each supply. OPA1656 sounded worst, Muses 8920 sounded best. Craig Jul 4, 2021 · This doesn't look like a high quality pcb and it would be easy to lift traces. Sep 14, 2021 · This leads me to believe there could be an issue caused by the back-to-back diodes across the inputs of bipolar (LME49990, OPA1612) and CMOS op amps (OPA1656). What else, maybe cleaner more resolved sound at congested parts. It has a very good dynamic range and a low level of harmonic distortion. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). Feb 10, 2020 · And I've tried many Opamps as well: the stock 5532, some directly purchased from TI 5532P and 5532AP, LME47920, LM4562 and finally some OPA1656 and OPA1612 on adapters. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety 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. Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. i expected them to put some 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. Aol Mar 17, 2019 · As compared with the OPA1656 which is 24V/us. There are many reviews of audio hardware and expert members to help answer your questions. Desire to learn and share knowledge of science required. Feb 17, 2023 · I'd go with the LM4562 (= LME49720) instead. The OPA1652 and OPA1654 op amps offer rail- • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. 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 OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. It has the most stable input capacitance vs. But that does not say anything about the SQ. 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 OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. The question is rather moot anyway. The recent swap I did was from opa1656 to opa1612 in the v3. CMRR is not a big issue. Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. I would have no problem staying with them, but I like tinkering. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. Jan 19, 2023 · - 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 very fast opamp but therefore it is easy to get it stable Sep 14, 2021 · Preamplifier Input Parallel Resistor (22k) Shootout: 1. Classics are a bit warmer while SS360x is a bit brighter presentation. 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. Composite amplifier is one of the best application with opa1656. 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. If a transient causes the op amp inputs to be pulled apart, the differential input voltage forward-biases those diodes causing a large input bias current. 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. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. It offers exceptional performance in almost any audio application. Also, a LME49720HA that costs 5 times as much as the PDIP or SMD version should also be interesting in terms of cost calculation. Jul 3, 2019 · WANTED: Happy members who like to discuss audio and other topics related to our interest. Mar 17, 2019 · The OPA1641 would be slightly better. Dec 9, 2019 · Technically speaking, it's really hard to beat opamps like AD797, AD8599, OPA1612, OPA1656, so it might be safer to use one of these over the "exotic" ones, unless swapping opamps is really fun for you and you have enough money to spend on this hobby. I would not classify the OPA1656 as a high speed amp in this context. Application Report Understanding Op Amp Noise in Audio Circuits Tyler Noyes, Tamara Alani ABSTRACT One of the greatest design challenges when building a high fidelity audio circuit is how to reduce the total system 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. LME49720 sound is boringand too light. 4nV/rtHz both flat. It's best use as an alternative to opa1612 when noise is not a big concern. Mar 17, 2019 · OPA1656 is less noisy than the OPA827, 2. Jul 4, 2009 · The Opa1652 and Opa1656 sound fantastic in those zishans I had both as buffers and they really brought out the best in driving my favorite op amps. The LME49860 is another option. 000. 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. I routinely use OPA1656 and related on adapters without any issues. com In no case did I have too high expectations regarding the sound Mar 9, 2023 · 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? Facebook Reddit Sep 27, 2019 · The high bandwidth and high open-loop-gain design of the OPA1656 provides a low distortion of 0. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. Dec 30, 2023 · I don't have the books you mentioned but I do have a book called Small Signal Audio Design by Douglas Self. I hesitate to recommend those without simulating the circuit. Also audio opamps may have enough input offset voltage to saturate the output for such high gains - if the input offset is +/-3mV and the gain is 1000, the output offset is +/-3V, or maybe much 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. Currently rocking the BUF634AU in it. I still have some channels of 2068 with old caps, so can A/B and the difference is shocking in a very good way. 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. You really don't want a tl072 dealing with 20mA into such low impedances. Both fet based opamps sounds a little bit more solid in the bass (not quantity but the imaging and the texture). 53 MHz gain bandwidth product, 24V/us slew rate. 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 22, 2022 · OPA1612 (soic on dil adapter board), bi-polar from input to output, again a very good opamp, which to me "sounds more balanced" top to bottom than the LME, it is just as dynamic, but just a little less obvious in the bass leading edge because the mid-range seems a little more fleshed out rich and full bodied, highs are just as good as the LME. The OPA165x Op Amps offer a FET-input architecture that achieves a low 2. The output swing for Aol should be considered as it is different between the two devices. See attached, Jan is using the opamp for his project MRK 3 input box (input 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. 75V peak corresponds to) at 20kHz. OPA1612 is open sounding but is a little warmer possibly because of the lower midrange roundness. Shameless plug I just highlighted the OPA1656 in my latest application note. 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. Review. 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. Today, I still have the same 2020 amplifier and the opa1656 sound much, much better at a fraction of the cost. common mode voltage that I've measured on any op amp. Page: 42 Pages. . >100mA output current. 1. Frankly, this product has some points in favor but some against it. Yageo FCR CF: Articulated and lively bass - maybe a tad too much and not the tightest, highs Feb 11, 2021 · I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. May 19, 2017 · maybe modern production 3886 are all above average? the designs seem to take the 'typical' GBW spec as the effective minimum My guesstimate puts the safe with production variation margin local closed loop gain corner as low as 100kHz for LM3886 with a greater than 4:1 range designing for stable extra loop gain from the nice input op amp really doesn't give much 20 kHz added safe composite loop Apr 21, 2019 · vs Burson V6 Classic. 5 metre cable at 33. Also FWIW, the 1820m with OPA1656 in it hasn't been recapped yet but they chart to still be reasonably healthy. 6 fa/rtHz broadband current noise. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. 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. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. We would like to show you a description here but the site won’t allow us. 5Vrms signal, 80-kHz measurement bandwidth. The applications that slew rate limiting is important to take into account is using the device in non-audio applications. 9nV/rtHz broadband voltage noise. • Audio Effects Processors • Musical Instruments • A/V Receivers • DVD and Blu-Ray™ Players • Car Audio Systems 3 Description The OPA1652 (dual) and OPA1654 (quad) FET-input operational amplifiers achieve a low 4. edit: looking closer at the pics, the I/V resistors are 390R (about half the datasheet values, which makes sense as they // the outputs). Apr 10, 2019 · OPA1656 is positioned for audio applications: low noise and really good THD (-131dB) and high output current (100mA), but still needs a series resistor to drive capacitive loads unfortunately. I've had an OPA1612 lose its mind in a filter circuit where an LME49720 worked just fine. TE CFS CF: Good soundstage, neutral mids, punchy basslines, overall detailed & open, superb vocal rendering, smooth highs, totally glare free. The xlr input and the trigger are two great additional features, as is the nice and efficient enclosure, however the mono is not true mono, and the 13 db of sinad lost is a bit disappointing, especially given a boost certainly not exceptional in power. Details are better on the SS360x while Bass may have had slightly better slam on the Classics. Feb 11, 2021 · The subjective sound is incredible. Jun 5, 2023 · After working with some OPA1612 on my recent Topping PA5 D01 Module replacement project (at ASR), a friend sent me a few OPA1612 opamps he ordered when they were in stock since i couldnt get them anywhere. File Size: 611Kbytes. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. In all, I will say the changes are noticeable, but not earth shattering. The OPA1656 has very good THD + N. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 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 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. 000035% (-129 dB) at 20 kHz and improves audio signal fidelity across the full audio bandwidth. It would cost some serious cash to get 8 channels of this quality. 3 MHz. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. 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. Opa1656 has good phase response at high frequency. Jul 5, 2006 · SQ was about the same as other ESS-based dacs in that class. May 15, 2022 · Now i tested opa1612 with lme49720 and 1612 is better in my opinion. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Dec 6, 2018 · This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. My first set of separate OpAmps, ushering my foray into the brave new world of OpAmmetryLoL Dry, crisp, analytical and non-intrusive (as compared to the bold NE5532) is what I would describe this opamp as. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. PRODUCTION DATA. 5-nV/√Hz noise density with an ultra-low distortion of 0. Some people have more recently started using OPA1656, which are very good, although they are a little less authoritative in the bass. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. May 10, 2022 · Many audio opamps have GBW of 10 to 20MHz or so, so at a gain of 1000 the bandwidth will have dropped to 10--20kHz - completely inadequate for audio. So far I don't hear any harsh sibilants (very clean) but it is virtue of my speakers. com with a TI insider involved. Together will make a really good composite amplifier, I will try this application at some stage. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. I also have both the OPA1642 (FET-input) and the OPA1612 (bipolar input) in stock and I think these would be interesting candidates as well. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. To help others to understand what other audio components are being used, a SML SU-6 and SH-6 are used. This OPA1656 OPA from Texas Instrument offers very good performances for audio use. Apr 8, 2021 · So there is a huge possibility of combinations) But I found my happiness as follows: - 5 X OPA1612 (Bi polar OP amps work generally well with DACs) - 2 X OPA1656 (They are CMOS op amps but I really love their signature, very natural with a flat response and great soundstage). • 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 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. Part #: OPA1656. So I don't think there is a singular correct Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. The NE5532 is perfectly fine. My OP1656 OpAmp Review. He discusses the Sallen and Key High Pass filter in this book and also the distortion. OPA1656 Feb 11, 2021 · looks very similar to the eighth image from post #2 of Bel Canto's S300i/S300iu - driven by dual mono Icepower amplifier modules with switch mode power supply - go to Inside the Bel Canto S300i integrated amplifier | Audiokarma Home Audio Stereo Discussion Forums and Bel Canto e. One S300iu integrated amplifier | Stereophile. Mar 17, 2019 · Many high-end audio manufacturers still use THT technology and avoid SMD at the sound-relevant points. The FET-input architecture achieves a low 2. It could sound pretty good, but one could get sound just as good from IC opamp designs. 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. File Size: 3MbKbytes. I ended up staying with this one. Description: Ultra-low-noise, low-distortion, FET-input, Burr-Brown audio operational amplifier. Description: OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Mar 14, 2010 · Overall balance with new amp is a little darker but with better transients. I don't care about listening tests or something else, just want to use the technical better one in my amp. 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. 2. Feb 10, 2024 · Thanks Amir, I was just wondering why the review was taking so long. sqqoiw aafi aoay xuscbtj ohpsps lefato zrf qkmebp elp rlpkl