Re: Zakk Wylde ZW-44 Op-Amps and Gain Control

Posted by ibanez48 on Jan 16, 2019; 11:14pm
URL: http://guitar-fx-layouts.238.s1.nabble.com/Zakk-Wylde-ZW-44-Op-Amps-and-Gain-Control-tp45348p45353.html

I think your main problem is the q1 you need the mpsa14 that it calls for. Mpsa14 is a darlington transistor. If u look at the data sheets on both the 5088 and the mpsa14 the hfe is way out of spec between the to the hfe is the dc current gain 5088 min is like 300 mpsa14 is like min 10000.