sonicake sonic aby box line selector ab switch aby pedal mini guitar effect pedal true bypass sonicake sonic aby is a tiny, sturdy, dual-mode, true bypass aby switcher for flexible signal routing. with the magical design you can feed your guitar signal to two amps, connect two instruments to the same amp, a/b signal route switching, and many more. get connected with amps, pedals, instruments – you decide! it also comes with a heavy duty metal footswitch, work status led and aluminum-alloy die cast casing to withstand wear and tear. road ready.