[sdiy] favorite "magical" opamp?

[Antti Huovilainen]

On Thu, Oct 7, 2010 at 5:34 PM, David G. Dixon <dixon at interchange.ubc.ca> wrote:
>> A lot of big name "studio grade" mixers and preamps from
>> SSL/AMEK/Focusrite etc in the 80s and 90s used TL07X and 5534/5532 opamps.
>
> This discussion has got me wondering whether the way we configure these
> opamps might not be just as (or more) important than the opamps themselves.
> I'm thinking about the value of the feedback/input resistors and the use of
> compensation caps here.

Inverting vs non-inverting configuration makes a large difference in
the distortion performance
of almost all opamps. Non-inverting has often order of magnitude more
distortion. The distortion
is further increased if the source impedance of previous stage is high.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow."
 -- Lt. Cmdr. Ivanova