GCI Bass Brutalist

[johnk_10]

I just finished this one, a GCI Bass Brutalist. All the film caps are from Wima and I used the mods contributed by John Snyder of Electrical Audio Experiments. I think that it sounds great:





gut shot:

 

[eh là bas ma]

nice build !

On this circuit i spent lot of time trying various IC combinations, because we can really hear a difference if we use other op-amps.
It really changes the gain texture and the range of action in the first half of the gain pot rotation.

TL71 is my favorite for the single op-amp IC, OPA2134 is not a bad choice for the dual op-amp, but i think trying various op-amps like TL72 or RC4558 is worth the trouble.