Based around the circuitry in the acclaimed Portico 5045 – which has benefited countless tours, arenas, houses of worship and broadcast stages worldwide – the 545 is a mono device for vocal or instrumental applications, and is compatible with any 500-Series rack. Exceptionally useful at reducing feedback without negatively impacting the sonic integrity of the source, the 545 effectively increases the level of a live microphone signal before feedback occurs by up to 20dB. With simply laid out, easily adjustable controls, the 545 is an invaluable addition to any setup where feedback or reverberation are problematic.