Love that Fender Blackface tone? This circuit comes from the discontinued Lovepedal Blackface Deluxe and it does not disappoint. 
Controls: Gain, Volume, Treble, and Bass.
Hand built using Neutrik jacks, 1% tolerance metal film resistors, and a pro grade footswitch rated for 50,000 cycles, for years of trouble-free use. 
Power: 9v DC (-) tip polarity