[sdiy] The sound of various Op-Amps

[Andre Majorel]

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/