If that's a red knob "the twin", it's a tube amp.
If it's a solid state twin, then it's from the late sixties and I was not aware that they had red knobs, but could have been replaced.
If it's "the twin", you will need the special 9pin Fender jacks. Don't even think about trying to modify to use anything else, too much switching going on in those jacks.
If it's a solid state twin, then it's from the late sixties and I was not aware that they had red knobs, but could have been replaced.
If it's "the twin", you will need the special 9pin Fender jacks. Don't even think about trying to modify to use anything else, too much switching going on in those jacks.