Pterodriver is a two-channel tube guitar preamp built with two 12AX7 (ECC83S) vacuum tubes. Its flexible settings provide a full range of tones from a warm and clean crunch to an aggressive PD-7 distortion. Comparing to its predecessor (PD-5), has a dedicated EQ for each channel, an effects loop and a Bright switch,
all of these features making more versatile for live usage. Due to its more traditional and ergonomic design, the preamp can be positioned more precisely on the pedalboard.