[sdiy] The sound of various Op-Amps

[Michael Boracci]

Thanks Andre,
 I now have four of these 5532's which I recovered from an old ACOUSTIC
brand guitar head that I stripped last week. They are now destined to become
part of my synthesizer. They have been used by Craig Anderton and others
many times over the years. As I go forward I am collecting various Op-Amps
that have been recommended by people on this list, which will be used to
build modules for my synthesizer. Including the 741. I expect to uncover
some really interesting qualities.

MB



-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Andre Majorel
Sent: Sunday, September 21, 2003 6:38 PM
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] The sound of various Op-Amps


On 2003-09-18 20:51 -0400, Michael Boracci wrote:

> Since joining this list recently, I have viewed some really great web
> pages which are maintained by some really excellent engineers and
> synth builders. I have noticed that a lot of modules and general audio
> circuits are designed around the TL-08X series of Op-Amps, of which I
> am quite fond.  I am aware that there are better op amps available in
> terms of slew rate, CMRR, THD, etc., however is there anything that
> can be said for the "color" or "sound" of the many Op-Amps that we
> have at our disposal?  I have used either the TL-08x series, or some
> of the newer Analog devices stuff for my builds and they seem to sound
> great.

What I got out of

  http://www.dself.dsl.pipex.com/ampins/webbop/opamp.htm

is that the 5532 is basically a high-end op-amp at a lowish price.
It's very comparable in performance to the OPA627, but costs
twenty times less. The only area where the OPA627 seems clearly
superior is slew rate (55 V/µs vs. 9 V/µs).

It draws thrice as much current as a TL07X/TL08X and has ten times
less distortion.

I've been kind of wondering why it gets so little use in analogue
synths.

--
André Majorel <amajorel at teaser.fr>
http://www.teaser.fr/~amajorel/



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