High speed MOSFET switching power supplies Complementary bipolar outputs (hybrid models 600/5 and 1200/5 feature high current MOSFET sub channel outputs) Dual power supplies for rock solid power delivery under extreme conditions (models 500/2, 600/4, 600/5, 1200/5, 700/6) Thermal, DC offset, reverse polarity and short circuit protection Top-mounted controls easily accessed for system tuning (500/2, 600/4, 600/5, 1200/5, 700/6)All models feature built-in high performance, 12dB/octave 2-way active crossovers (model 1200/5 sub channel dB/octave low-pass crossover) Switchable 8 dB bass EQ function