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The best sounding audio integrated opamps

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29th October 2009, 08:16 AM

#1

Andrea:

Banned

Join Date: Oct 2009

The best sounding audio integrated opamps

I've tried everything or nearly so, and these
are the absolute best sounding (voltage feedback) opamps for audio, for my
hearing...:

LT1028, OPA132UA, LME49723, LME49720HA

A
slightly special mention to the OPA211 too, which isn't bad.

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29th October 2009, 10:38 AM

#2

ratza

diyAudio Member

Join Date: Dec 2007

Location: Sibiu, Romania

What music did you use for comparison? What
music source do you use?

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Any solution is a compromise.

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29th October 2009, 11:08 AM

#3

Andrea:

Banned

Join Date: Oct 2009

Music: XTC, Calexico, Gillian Welch, EELS,
Leonard Cohen, Nick Cave, Tom Waits, etc.

System: Cambridge Audio
CD transport > CS4398-based DAC (here is where I've been putting the
opamps) > Pioneer integrated amp > Polk Audio bookshelf speakers.
Cables are all good quality.

I tried the OPA827 too - too bland
and lifeless. The same is true about the LME49722, and others (LM6172
above all). The LM4562 is decent but the LME49723 sounds better. The
OPA132UA is the best FET opamp that I know of.

I still want to
try (in the DAC I mentioned) the THS4051 and the OPA1611.

The
LT1028CS8 is what I use now and it's excellent..

Last edited by Andrea:; 29th October 2009 at 11:14
AM.

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29th October 2009, 11:49 AM

#4

CFT

diyAudio Member

Join Date: Jul 2006

Location: Hong Kong

Hi Andrea,

Nice to see you here

How
would you comment on these: ADA4898-1, AD8599, AD797 and opa827?

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29th October 2009, 12:05 PM

#5

ratza

diyAudio Member

Join Date: Dec 2007

Location: Sibiu, Romania

Andrea: thank you for informations. I'm using
a OPA2134 based preamplifier and the sound transparency is great.

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29th October 2009, 01:38 PM

#6

Andrea:

Banned

Join Date: Oct 2009

I said above about the OPA827... it might be
more interesting for I/V conversion.

Yup, the OPA2134 is a fine
sounding opamp. Nevertheless, my favorite dual is the newer (and better?)
LME49723.

AD opamps are my weak side, since those nice folks
don't want to send samples to me.

However, my finding so far with all the AD opamps I've heard would
be precisely summarised with "nice, but flawed". The AD845KN is one AD
opamp that I like...

The AD797 is quite nice except that the mids
aren't quite fluid and grainless.

The ADA4898-1 is interesting but
I haven't managed to try it yet. The AD8599 was recently added in that big
"opamp measurement shootout" and its distortion was disappointingly high
(significantly worse than an OPA2132 for instance).

BTW the
LT1028 absolutely blows the OPA827 out of the water for sound quality in
simple DAC buffering.

Last edited by Andrea:; 29th October 2009 at 01:49
PM.

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29th October 2009, 02:49 PM

#7

Andrea:

Banned

Join Date: Oct 2009

Ah, I wanted to mention that I've also tried
a few discrete opamps: OPA-Earth, OPA-Sun and OPA-Sun V2, from Audio-GD.
The OPA-Earth was tonally dull and midbass lacking, the OPA-Sun was
mechanic in the mids, the OPA-Sun V2 was the best sonically but produced a
whopping 375 mV of DC offset where all of the chip opamps produced none.

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29th October 2009, 03:02 PM

#8

Pano

diyAudio Moderator

Join Date: Oct 2004

Location: Kona, Hawaii

Blog Entries: 4

Interesting. The OPA132UA & LME49720 are
2 that I like, just because they work well for me. Nice to know they are
liked by others.

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29th October 2009, 03:17 PM

#9

peranders

Electrons are yellow and more is better!

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Join Date: Apr 2002

Location: Göteborg, Sweden

Blog Entries: 4

Quote:

Originally Posted by Andrea:

I've tried everything or nearly so,
and these are the absolute best sounding (voltage feedback) opamps
for audio, for my hearing...:

LT1028, OPA132UA, LME49723,
LME49720HA

A slightly special mention to the OPA211 too,
which isn't bad.

Let me fill in here,
if you want to have an opinion here we have two different
answers.

1 Best opamp in your particular design.

2 Best
opamp on a 100% perfect pcb with everything tuned in for the opamp in
mind.

My answer to your question is that there is no answer because
the opamp in mind will probably not work optimally.

Is the opamp
for a vinyl amp, active filter, tone control, buffer or what? You must
choose the opamp with taste and design a circuit with taste also.

__________________
/Per-Anders (my first name) or P-A as my
friends call me
Group buy Pavel Dudeks excellent
LM4780 based amp Sign up here

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29th October 2009, 04:07 PM

#10

adason

diyAudio Member

Join Date: Nov 2004

Location: Maryland

Hi Andrea, best opamp is removed opamp. Try
lampizator.
Ed

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