A compact, modern replica of the 1966 Professional MKII Tone Bender pedal created by Gary Hurst. The BPC MKII Tone Bender features an authentic 3 transistor circuit with 3x OC81D transistors that provides a thicker and slightly less aggressive sound than the MKI version. The OC81D loaded original MKII can be heard on many Jimmy Page (Led Zeppelin) tracks such as 'Whole Lotta Love'.