I just tried cranking a Tweed Champ to 8 or so, and using a Deluxe Memory Man TT as a clean boost (around 2 o'clock on the gain knob, mix all the way down). Man oh man. What a glorious sound. Clear notes with sputtery fuzz underneath them. This may be the best this amp has ever sounded, and the guitar volume knob becomes an instrument of its own.