ULTIMATE OPAMP SHOOTOUT... Where you get to decide.

Which opamp do you prefer the sonics of ?

  • Apple

    Votes: 2 5.0%

  • Banana

    Votes: 7 17.5%

  • Damson

    Votes: 1 2.5%

  • Kiwi

    Votes: 1 2.5%

  • Orange

    Votes: 6 15.0%

  • Peach

    Votes: 6 15.0%

  • Pear

    Votes: 3 7.5%

  • Pomegranate

    Votes: 11 27.5%

  • Raison

    Votes: 2 5.0%

  • Satsuma

    Votes: 1 2.5%
  • Total voters
    40
  • Poll closed .
Jump to Latest
Mooly

Mooly

Administrator
Joined 2007
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Apple and the Pear. Interesting result because these were the TLE2072 and TLO72 respectively.

Which leaves the wild card. This was the Peach.

OK, I hold my hands up because you would never guess this one and in fact the circuitry was different but I really wanted to see what you made of it. It was a current feedback opamp, the LT1229.

Opamp_Shootout_Circuit_Wild_Card.jpg


Who liked that one and why ? Technically that had the highest slew rates of all, its in the hundreds of volts per microsecond region.
 
Mooly

Mooly

Administrator
Joined 2007
Paid Member
M Gregg said:
A quick listen,

Laptop permitting. :)

:confused: is it me or does C sound closer to the master and B have what sounds like more 3rd harmonic? LOL :scratch:

Anyone else got any ideas? :D

Regards
M. Gregg
Click to expand...

You liked the................. OPA134

johnr66 said:
To me, I hear a bit more sharpness to the violins in C, so B is the 741.
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Yes :D

Pano said:
In your new test both recordings are similar, C has just a bit more noise than B. Can only hear that on headphones, tho.
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Hmmm :D Pano heard most noise on C, Ron heard it on B.

Ron E said:
Between a, b and c, I definitely hear more noise in b and c, and c sounds somewhat more harmonically rich. C also seems louder than A or B. I vote for B, as it sounds more like the original.

It is much easier to listen to short samples than a three minute piece. I would vote for 15 seconds or less for each of your "fruity" series, and leave the too-loud violin piece out.
Click to expand...

Ron heard more noise in B but voted sonics as best for B. Thats an honest choice. I don't mind a bit of hiss in original recordings tbh, it can add a slight patina thats not unpleasant.


Jay said:
Indeed I needed to think hard about it. I was confused from previous experience where orange has the highest distortion but is favorable. I'm not familiar with 741 sound but it is hard to believe if it can sound like orange, which is close to tube sound. In my prediction 741 should have sounded hard but vintage chips do sound more open.

But there is clear difference between orange and B here. They have high distortion (orange was worst) but B is very fatiguing. I'm familiar with opa134 and it is not fatiguing because the distortion is second order.
Click to expand...

Where's Jay... again :D
You have a thing about the OPA134 but you are correct again. B was the 741.

Pano said:
Can you really tell them apart that much Jay? Have you tried a blind test?
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I don't know how he does it. Must be that super hand phone he mentioned at the start :p
 
J

Jay

Banned
Joined 2003
Mooly said:
Which leaves the wild card. This was the Peach.

OK, I hold my hands up because you would never guess this one and in fact the circuitry was different but I really wanted to see what you made of it. It was a current feedback opamp, the LT1229.
Click to expand...

I was 100% sure that Peach is direct. It is "perfect". No perceived trouble in reproducing sounds. Reminds me of Esperado who compared the output of CF opamp and found it close to direct.

I expected banana was lm4562 and orange was opa134 because I like them the most. I guessed the second order distortion of op134 will show in soundstage or vocal. Orange vocal with music#1 was very beautiful like tub.

The highest slew rate I guessed pomegranate because I could have like it too, except for something I don't understand so I suspected oscillation with wide band opamp.
 
Mooly

Mooly

Administrator
Joined 2007
Paid Member
Jay said:
I was 100% sure that Peach is direct. It is "perfect". No perceived trouble in reproducing sounds. Reminds me of Esperado who compared the output of CF opamp and found it close to direct.

I expected banana was lm4562 and orange was opa134 because I like them the most. I guessed the second order distortion of op134 will show in soundstage or vocal. Orange vocal with music#1 was very beautiful like tub.

The highest slew rate I guessed pomegranate because I could have like it too, except for something I don't understand so I suspected oscillation with wide band opamp.
Click to expand...

Here's the LT1229 for real on a scope. In the test circuit in this thread I checked it was stable before making the files.

http://www.diyaudio.com/forums/anal...rent-feedback-opamps-simulation-practice.html
 
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