Passive audio switchers occasionally create an audible pop during switching that can be heard through the PA system, disrupting the performance. This can be caused by the introduction of phantom power or by stray DC offset from any powered device connected to the switcher. The HotShot 48V employs active circuitry and a time delay microcontroller for silent switching under any conditions, allowing you to use condenser or dynamic microphones with no noise whatsoever. A five millisecond delay is introduced when the switching relay is activated, short enough to go unnoticed by the artist, but long enough for any DC leakage to dissipate, preventing audible noise and ensuring seamless switching during any performance.