I just bought a NOS bluesbreaker. With the volume knob all the way down on channel 2 its still on.the 1 channel works fine (with knob all the way down no sound).I understand this jtm45 style amp is based on the bassman amp 59 circuit.This is a 2 channel amp just like the 59 bassman.Any ideas why Im getting sound in channel II with the volume knob off. thanks Gary