E-Series models include the E15, E25 and E30Q, each offering a sophisticated power control system (linked to both the limiter and the power supply) which keeps the amps within their operating limits at all times. Power Reduction Circuit (PRC) controls on rear panel, linked to the limiter threshold, enable each channel to be independently set so that different loudspeakers can be connected to each channel with safety. Full DC, short circuit and thermal protection, which automatically reconnects when the fault is cleared. Front panel LEDs indicate fault condition. Optional crossover cards available.