The BOSS DF-2 SUPER Feedbacker & Distortion is a model that adds a feedback function to the classic DS-1 distortion pedal. It has the unique feature of starting feedback just by stepping on the pedal, and the feedback continues even if you unplug the input cable. The feedback sound can also be controlled with the knobs. The distortion sound is similar to the DS-1, with a slightly higher GAIN. *This is an effect pedal with an ACA-100 adapter specification. *All accessories are shown in the photos. An effect pedal with feedback and distortion functions that realizes a variety of sounds. - Model: DF-2 - Function: Feedback & Distortion - Controls: Level, Tone, Distortion, Feedback, Over Tone - Power: BOSS ACA adapter only - Brand: BOSS Thank you for viewing.