I found out , this one for volume channel 1 , if someone interested in too
https://store.mesaboogie.com/products/pot-591742a-replacement-for-591742-450s-1m-linear-with-pull-switch.html
Hi everybody , actually ı am not good at electronics, ı have a quad preamp and our local amp tech told me to change whole set of pots in channel 1. I want to know what kind of pots used ? Values or types in quad preamp? Thanks for replies