The GSP1000 ABY Switcher gives the option of two-input/one-output or one-input/two-output configurations. The pedal features many applications, such as (1) Running one instrument to two amps in stereo, (2) Switching between two amps, (3) Plugging two instruments into one effect chain, (4) Bypassing effects. A reliable performance needs a pedal with a heavy-duty housing and nonslip rubber base.