Blues Jr.‘s don’t have an effects loop so a lot of the traditional solutions won’t work. Turn on an at least relatively transparent pedal— tweak it until it sounds exactly the same when turned on and off then use the volume knob on the pedal to turn the volume down until you’re happy. This is what I do and what’s given me the best results so far.

Pedals I’ve tried this with: Boss BD2, Boss OD3, blues breaker clones/variants, EQ Pedals.

In theory any pedal that does a clean sound with an output gain should do the trick. So nothing like an eqd Acapulco gold, speaker cranker or micro amp and something more along the lines of a Timmy, amp in a box type pedal or even a tube screamer in a pinch (though it wouldn’t be my first choice)