Audio Research LS2B tweak

[wandelblu]

Hi,

I''ve been looking for some tweaks about Audio Research LS2B and I've just read on audioreview that changing some caps,
It improve very much.

http://www.audioreview.com/cat/amplification/preamplifiers/audio-research/PRD_124807_1591crx.aspx

Do you know something about this tweak?

Doesn't anyone have the components layout of this preamp?
I'm looking for it.

Enzo.

 

[jackinnj]

http://www.arcdb.ws/LS2/LS2.html

 

[analog_sa]

Do you know something about this tweak?

Replacing a capacitor is clearly audible but can also be seriously exaggerated. Assuming the original caps are not total junk you may consider playing with various bypass arrangements instead.

It's a pretty nutty circuit if you ask me. Are all the components in the nfb path just trying to avoid an extra cap? Or is there more to it than i see? I'd be tempted to remove the opamp and surrounding components and replace them with a cap+resistor. Unless R43 has a very small value and requires an electrolytic.