QSC ISA750 Power Amplifier

The ISA Installed System Amplifiers are designed to meet the needs of sound system designers and contractors worldwide. Three models feature isolated 25, 70, and 100-volt outputs for distributed sound systems, while four low impedance models are rated for 2 ohm operation.

Amplifier Features

• Rear panel gain controls for tamper resistance; 2-dB detents allow for quick and repeatable settings.
• XLR and detachable Euro-style input connectors
• DataPort V2 for use with DPV2-compatible signal processing accessories (XC-3, SF-3, LF-3) and DSP-3/DSP-4 (with external power supply)
• Independent defeatable clip limiters for reduced distortion
• Two-tier Class H complementary bipolar output circuitry reduces AC power draw and waste heat by 40%
• Selectable high-pass filters (30 Hz or 70 Hz) protect speakers and prevent speaker transformer saturation with minimal effect on program material
• Front panel LED indicators include power, signal, and clip
• Covered barrier strip output connectors for safety agency compliance
• Automatic on-demand variable-speed fan: quiet normal operation, with maximum cooling when needed
• Rear-to-front air flow helps keep equipment racks cool
• Stereo, bridge, or parallel operating modes
• Comprehensive protection circuitry including DC, infrasonic, thermal overload, and short circuit protection
• 3-year warranty plus optional 3-year extended service contract