This is an ARIA DT-10 distortion effector. It's a unique pedal with a two-stage switching system. When the stage 2 switch is on and the pedal is lightly pressed, it's stage 1. If you continue to press the pedal down further, it switches to stage 2, changing the amount of distortion. I bought it used for guitar practice, but I have too many effectors now, so I'm selling it. This is a sale of the main unit only. Please refer to the photos for condition. I have confirmed it works with a power supply. There are some minor scratches, but it's in relatively good condition for its age. Please refer to the photos for condition. Please understand that this is a used item, and refrain from purchasing if you are overly concerned about condition. I am not considering price reductions or selling individual items. Shipping will be via Yu-Yu Mercari delivery. Immediate purchase is welcome. Thank you for your consideration. The following is a quoted description: DT-10, a two-stage distortion effector. - Model: DT-10 - Function: Distortion effector - Knobs: DIST, LEVEL, TONE - Switch: 2-stage switching - Power: 9V DC adapter or battery - Country of manufacture: Made in Japan #ARIA DT-10 #Aria #Distortion Thank you for viewing.