Stereo output compatible Choralflange effect pedal, with adjustable Mix, Delay Time, Depth, and Rate. - Model Name: Choralflange - Brand: Fulltone Musical Products Inc. - Output Type: Stereo Output - Controls: Mix, Delay Time, Depth, Rate - Power: 9V DC This is a guitar effect pedal I found at my parents' house. Operation has been confirmed. The appearance is as shown in the photos; there are some scratches from use, but it's generally in good condition. Due to the small number of digits in the serial number, and the fact that it's now a hard-to-find item, I've set the price accordingly. I'm very sorry, but I can only comment on the appearance. I'm unable to provide details about the sound or how it's used, so I would appreciate it if only those who understand this would purchase it. This was something my family cherished, so I'd like to pass it on to someone who will continue to use it. I will carefully package and ship it. #MintAmp I have other items for sale, so please take a look if you're interested!