This is a used Digitech Tone Driver overdrive effect pedal.

Four Main Knobs: Level, Tone, Gain, and a signature Morph knob. [1]

• Morph Control: Allows you to blend or transition between classic overdrive flavors—typically starting from a DOD 250 style on the counter-clockwise side, moving toward a TS9 Tube Screamer around 12 o'clock, and a TS808 style as you turn it clockwise.
• Dual Outputs: Features a standard amplifier output plus a second output equipped with DigiTech's Advanced CIT (Cabinet Integration Technology) speaker/mixer modeling, which remains active even when the pedal is bypassed.
• Tonal Versatility: The Morph knob gives you a wider range of sounds than a standard single-circuit overdrive like a stock Tube Screamer.
• Great TS-Style Tones: Between the 12 o'clock and 3 o'clock range on the Morph control, users note a smooth, warm midrange "honk" very close to traditional TS9/808 pedals.