Yellow ACID DRIVE effector with DRV, FLT, RES, and VOL control knobs. - Model Name: ACID DRIVE - Color: Yellow - Power: DC9V - Output Terminals: AMP - Control Knobs: DRV, FLT, RES, VOL Thank you for viewing. This is a drive pedal specifically designed for analog synthesizers. I am selling this as part of organizing my equipment due to the transition to digital processors for effects, but I still really like the unique drive sound, and it's great to be able to control it intuitively. I purchased it new a few years ago from Kagi-do and have only used it for making music at home. I haven't taken it outside, and although I forgot to take a picture of the bottom, I haven't attached it to a board, so the condition is very clean. (I will post it if necessary.) A simple instruction manual is included, although it's not in the photos. An adapter is not included, so you will need to provide your own, or it can be powered by a 9V battery, just like a guitar effector. Currently, it sells for ￥47,300 (tax included) new at Ikebe Gakki, etc. Please note that I am not considering lowering the price at this time. Due to work, it may take a little time to ship, but I will try to process everything as quickly as possible. Thank you.