so you know if you want hi-fi slp pop take drive out and if you want warm tubey goodness put drive to about half (I usually set it around 1:00

Great "drive" control to add vintage overdrive tone.

then you can crank it to get a sweet drive tone, although I don't htink you would wnt it all the way up, if you want ridiculous distortion you may use a pedal because this depends how you have the mid frequencies set