This 150W amplifier was designed with the sound contractor in mind, offering professional performance and installation convenience. This Gold Seal amplifier offers a unique combination of built-in features, ultra-high reliability, and extensive input flexibility and output options. Features: 7 inputs:4 MIC (Lo-Z), 1 AUX (Hi-Z), 1 MIC/TEL, 1 MIC/AUX, 4-ohm, 8-ohm, 25V, 25VCT, and 70V outputs, Dual-function, 10-band graphic equalizer (acoustic EQ/feedback control), True loudness contour function, Aural exciter for improved intelligibility, Automatic level control, Switchable phantom power supply, Variable Aux input muting, Remote master volume control capability, Input muting via contact on all inputs, Voice-activated Aux muting on Tel input, Aux fade after Tel page, Pre-amp out/power amp in connections, Booster amp output connection, Tape output connection, Low-cut filter for Mic channels, Thermal and overload protection, Rack mountable with accessory mounting kit, UL and CSA listed.