Yamaha R100 digital dynamic processor with intuitive operation buttons. - Model: Yamaha R100 This is the one that makes Bowie's "huer" sound. I'm selling it because I don't use it anymore. - Display: Digital display (27) - Accessories: AC adapter - Operation buttons: Parameter, memory recall, effect adjustment buttons It's an old item. I've tested the sound, and it works. It looks pretty clean. The adapter is included. Thank you for looking.