High-power, 2-channel, 2U rackmount amplifier for installed sound applications Switching power supply lowers overall amplifier weight Direct 70V/100V/140V/200V constant-voltage or 2/4/8 Ohm low-impedance operation Independently selectable Input Sensitivity switching per channel Rear panel Programmable Input Processor(PIP2) connector accepts accessory expansion modules for specific custom installation requirements Thermal Level Control(TLC) circuitry protects amplifier from overheating; engages input compressor, dynamically reducing input gain when individual channels overheat Junction Temperature Simulation(JTS) quick-activation circuitry limits drive level of output devices to tolerable range if excess power is required; protects output transistors without shutting down channel Continuously variable fan cooling; venting with front-to-rear forced airflow Removable balanced terminal block input connectors with "Y" switch Switchable high pass filter per channel, eliminates step down transformer saturation in distributed systems Complete array of front panel function and warning indicator LED's for each channel Complete array of rear panel function and filter switches Power on indicator flashes when AC mains are under or over voltage Advanced protection circuitry covers shorted outputs, DC, mismatched loads, overheating, high frequency overloads, voltage fluctuation and internal faults.