New member with a V4-B

[poorboywilliams]

Tested the external amp out - plugged the bass directly in there (tried both jacks), and with the volume maxed on the bass, it was definitely louder. Still relatively quiet and nowhere near as loud as it should be, but far better than with the bass in one of the regular inputs. Not sure exactly what I was expecting, but I assume this points to an issue in the preamp section?

I guess my next step will be testing every resistor that I can get to - hopefully I find something that has drifted way out. Let me know if there's anything else I should be considering. Still wondering about that OT..