Poor quality passive ABY boxes/line selectors load the guitar signal down, degrading the tone and rendering the whole exercise almost pointless. Not to mention ground hum issues caused by non-isolated outputs. On the other hand, active ABY pedals are in short supply and are usually quite cumbersome. Driving long cables is no problem as the Amp Detonator’s buffered low impedance signal ensures your input’s upper frequencies are maintained. Output B features an isolating transformer which eliminates common ground loop hum when using two amps simultaneously. The transformer output has been engineered for maximum transparency, correcting some of the tone-altering characteristics that affect many other ABY boxes. Two amps out of phase with each other sound awful but many ABY switchers ignore this. Even if the amps are in phase, running different pedal chains to each amp can reverse the polarity of the signal, causing the two signals to be out of phase when engaging both amps. The Amp Detonator addresses this with a simple fix on the top of the unit. The only active ABY switcher that can be powered by battery as well as a 9 or 12V DC adapter. It also features an internal charge pump circuit which doubles the voltage internally to 18V, increasing the internal headroom for incredibly low harmonic distortion.