1) The master is not part of the Poweramp section. it feeds the preamp out portion of the loop. So it will not effect the volume of just the poweramp.

2) You will have a significant volume drop with all the preamp switches off. It is quite less volume w/ the bright off, Deep off, and in the jazz position. This is a normal reaction.

So there is nothing wrong with your amp, at least I can tell by what you posted. Just mess around with it.  find what works for you.

BTW 50 or 100watt?

Has head cab and amp fully assembled from Ceriatone. Don't wait the 10-13 weeks. Will ship 1350 to the lower 48 or acutal shipping outside the US. PM me if you are interested.

Finacial issue causes sale otherwise an awesome amp.

Greg

Brand new OTS 50 watt head complete amp and cab.

No flaws what so ever. Awesome tone but I just had a financial issue and need the cash.

Will ship jn the original shipping carton insurred and paypaled for 1400 OBO to the lower 48 USA. Don't wait the 12+ weeks.

PM if you have questions