V6 vivid measured superb tho. I have them measured ln violectric v200 and gain stage of o2. At least -120db thd performance. Noise is roughly around 3-4nV.The first and obvious conclusion: we must avoid the audiophile Burson Audio V5.
V6 vivid measured superb tho. I have them measured ln violectric v200 and gain stage of o2. At least -120db thd performance. Noise is roughly around 3-4nV.The first and obvious conclusion: we must avoid the audiophile Burson Audio V5.
Wow the Burson V5 is really bad, indeed. Sparkoslabs SS3602 is surprisingly good!!The first and obvious conclusion: we must avoid the audiophile Burson Audio V5.
That looks like distortion cancellation to me. The distortion somehow out of phase to the test equipment and causing lower distortion. There is no way that lme49720 has that high distortion but somehow beaten by a discreet opamp.Wow the Burson V5 is really bad, indeed. Sparkoslabs SS3602 is surprisingly good!!
It's common knowledge. What they said in that page are correct. Nothing wrong about that. And I agree that their approach will give awesome results. Just the attitudes made me somewhat uncomfortable.That's a fair point.
Is cascading opamps topology common in many products? Or just the smart ones use them?
I give him points for explaining the design objective and process.
Also what about the loop gain and bandwidth thing he mentioned?
@maty wold you mind to reply to my question posted here: https://www.audiosciencereview.com/...parkos-sonic994-1612.3305/page-2#post-157966? Without knowing the gain used and the stage where the opamps were used for the measurements might not have much sense for some of us. Thank you!
Is there any chance if you could measure Sparkos, OPA1611, Burson Vivid and Classic opamps? Or if @amirm could do a review based on some most popular models?Output Linearity 600 Ohm +20 dBu Residual Spectrum:
AD797 (noisefloor @ -130 dB, 2nd harmonic @ -89 dB)
AD823 (-110 dB, 2nd @ -53 dB)
AD825 (-108 dB, 3rd @ -49 dB)
AD826 (-108 dB, 3rd @ -47 dB)
AD829 (-125 dB, 3rd @ -68 dB)
AD845 (-110 dB, 2nd @ -79 dB)
AD8599 (-130 dB, 2nd @ -68 dB; lot of spurious harmonics @ -70...-80 dB)
OP275 (-118 dB, 2nd @ -52 dB)
Audio-GD OPA-Earth (-122 dB, 2nd @ -40 dB)
Audio-GD OPA-Moon (-115 dB, all @ -40...-50 dB)
Burson Audio Discrete OpAmp Mk II (-120 dB, 2nd @ -40 dB)
LT1128 (-132 dB, 2nd @ -75 dB)
LM833 (-120 dB, 2nd & 3rd @ -75 dB)
LM837 (-120 dB, 2nd @ -70 dB)
LME49860 (-123 dB, 2nd @ -90 dB)
SGA-HVA-1 (-128 dB, 2nd @ -110 dB)
SGA-LNA-1 (-136 dB, 2nd @ -64 dB)
SGA-SOA-1 (-128 dB, 2nd @ -60 dB)
SGA-SOA-2 (-128 dB, 2nd @ -62 dB)
Signetics NE5532 (-115 dB, 2nd @ -58 dB)
TI NE5532 (-115 dB, 2nd @ -59 dB)
TI NE5534 (-120 dB, 2nd @ -68 dB)
Sound Skulptor SK25 (-114 dB, 2nd @ -89 dB)
Sound Skulptor SK99B (-133 dB, 2nd @ -97 dB)
OPA211 (-129 dB, 2nd @ -80 dB)
MC33078 (-119 dB, 2nd @ -40 dB)
OPA551 (-115 dB, 2nd @ -64 dB)
OPA627 (-120 dB, 2nd & 3rd @ -79...80 dB)
OPA827 (-120 dB, 3rd @ -86 dB)
OPA2132 (-115 dB, 2nd @ -62 dB)
OPA2604 (-110 dB, 2nd @ -46 dB)
RC4580 (-118 dB, 2nd @ -55 dB)
TL071 (-115 dB, 2nd & 3rd @ -40 dB)
For +20 dBu the best opamps are bolded, also good-enough opamps have been underlined. For 0 dBU about the same opamps are having about the same place in the list. Interesting that solid-state "opamps" (SGA-HVA-1 & SK99 & SK25) are measuring extremely well and the well-known LME49860 (LME49720 and NE4562) is just a tad lower in performance. +20 dBU means lot of gain, so these opamps should perform admirable when used in voltage amplification gain.
Did anyone compare Sparkos with Burson V6 Vivid? I'm trying V6 Vivid in my DAC on a lease from my audio buddy now, but I've heard a lot of nice stuff about using Sparkos in my DAC so I'd like to know if there are any details on their comparison.
What DAC? In any case there is unlikely any big benefit to be had swapping out the designer's choice opamp in a DAC...Did anyone compare Sparkos with Burson V6 Vivid? I'm trying V6 Vivid in my DAC on a lease from my audio buddy now, but I've heard a lot of nice stuff about using Sparkos in my DAC so I'd like to know if there are any details on their comparison.
Sparkos should perform better than v6. V6 has distortion of -120db(according to my own measurement). And Sparkos can go -130db or less(according to others measurements). Problem is, i don't buy into the discrete opamps anymore. opa1612 opa1656($3) have thd performance better than -140db. If you like, you can use two opamps in the package with some extra r c components to make a super opamp which will give unmeasurable distortion.
And the real question is, do the circuit itself and the PCB layout allow this kind of performance? The opamp is only a part of the equation.
Maverick TubeMagic D2. It is sold with two kinds of opamps, I have the upgraded version with OPA627s, so there are two designers choices already.)What DAC? In any case there is unlikely any big benefit to be had swapping out the designer's choice opamp in a DAC...
Sparkos should perform better than v6. V6 has distortion of -120db(according to my own measurement). And Sparkos can go -130db or less(according to others measurements). Problem is, i don't buy into the discrete opamps anymore. opa1612 opa1656($3) have thd performance better than -140db. If you like, you can use two opamps in the package with some extra r c components to make a super opamp which will give unmeasurable distortion.
And the real question is, do the circuit itself and the PCB layout allow this kind of performance? The opamp is only a part of the equation.