This is the Bulldog Distortion, a famous vacuum tube effector from VOX. It provides a distortion unlike typical VOX sounds. Operation has been confirmed. All knobs are working without issue. No scratchiness is felt. It's structured to create distortion with Channel 1 and boost with Channel 2. It seems that Channel 2 alone doesn't produce distortion. It uses four AA batteries for battery operation. It's not 9V, so it's easy to use with batteries. Since there are no batteries, battery operation has not been confirmed. There are scratches overall. This is an auction for the main unit only. It will be shipped via Yu-Packet Plus. - Brand: Vox - Model Name: Bulldog Distortion - Type: Distortion Pedal - Controls: Gain 1, Gain 2, Volume 1, Volume 2, Bass, Treble, Gain Voice - Output: DC 9V - Connectors: Input jack, Output jack - LED Indicator: Effect indicator LED Thank you for viewing.