This is the Hall of Fame (HOF) mini reverb effects pedal by TC Electronic. It’s a very cool pedal and simple because it has one knob to control the reverb amount in your signal as well as the volume of it at the same time. To make the most of it, download the Toneprint app on any smart phone and you’ll have many many sounds you can use! Just beam it through your guitar pickups and you’ll have a different reverb each time! Easy!! The app and reverb effects are all free too! I used it lightly and took good care of it. The current reverb sound I have on it is great. I’m just ready to get a different reverb pedal.