Radial Switchbone-V2 Amp Selector & Boost PedalThe Switchbone V2 controls your two or three amp setup, with the ability to switch between amps silently, eliminate buzz and hum, and activate a high powered clean boost for soloing. The Switchbone V2 may well be the ultimate guitar amp switcher. This device lets you switch and combine up to three guitar amplifiers without introducing distortion, switching noise, or hum into the signal path. Most importantly, it will retain the natural tone and feel