ART CoolSWITCH - A/B-Y Signal Source/Amplifier Foot Switcher with LEDsThe CoolSWITCH delivers full A B Y switching, plus parallel common in out jacks. It lets you switch a common source signal (guitar, bass, or keyboard) between two amplifiers or amp channels. It also allows you to switch two source signals (like two different guitars) into the same amplifier. The CoolSWITCH features LED indicators to show whether A, B, or Y routing is in effect. The Y routing combines the A and B outputs in parallel so two amps can be