I have had my DSL40 for about 5 years now. Today I turned it on and have zero gain. The volume seems to work but no distortion, even on ultra gain. I am assuming this means the tubes need to be replaced, but the poerp or preamp tubes? Or all of them?
Hello Doug,
We would recommend that you have your DSL40 looked at by a qualified engineer so they can investigate the loss of gain, before you start to change the valves.
Kind Regards
Marshall Support
