QSC ISA750 | 2 Channels Commercial Power Amplifier

The QSC ISA750 is a highly reliable 2-channel commercial power amplifier engineered for professionals who demand performance and durability. Its robust design and advanced features make it an optimal choice for various commercial audio applications, including clubs, conference rooms, and auditoriums. This amplifier is well-equipped with rear panel gain controls to prevent unauthorized tampering and 2-dB detents that facilitate fast and consistent settings. The XLR and detachable Euro-style input connectors ensure high compatibility with diverse audio systems, and the DataPort V2 supports DPV2-compatible signal processing accessories for enhanced performance.

Renowned for its superior protection circuitry, the QSC ISA750 offers comprehensive safeguards against DC, infrasonic signals, thermal overload, and short circuits. It boasts independent defeatable clip limiters, reducing distortion while maintaining sound quality. With selectable high-pass filters at 30 Hz and 70 Hz, it effectively mitigates speaker transformer saturation, ensuring the longevity of your speakers. The front panel's LED indicators for power, signal, and clip status make monitoring straightforward and hassle-free. Additionally, the automatic on-demand variable-speed fan guarantees quiet operation and maximum cooling efficiency when necessary.

Key Features

• Rear panel gain controls for tamper resistance with 2-dB detents
• XLR and detachable Euro-style input connectors
• DataPort V2 compatibility for signal processing accessories
• Independent defeatable clip limiters for distortion reduction
• Selectable high-pass filters (30 Hz and 70 Hz)
• Front panel LED indicators for power, signal, and clip
• Covered barrier strip output connectors for safety
• Automatic on-demand variable-speed fan for silent operation
• Rear-to-front airflow to maintain cool equipment racks
• Stereo, bridge, or parallel operating modes
• Comprehensive protection circuitry (DC, infrasonic, thermal, short circuit)

Specifications

• Output Power Per Channel, Stereo Mode: 8, 20 Hz-20 kHz 0.1% THD – 450 W; 4, 20 Hz-20 kHz 0.1% THD – 650 W; 2, 1 kHz 1% THD – 1200 W
• Output Power, Bridged Mono Mode: 8, 1 kHz 0.1% THD – 1500 W; 4, 1 kHz 1% THD – 2400 W
• Signal to Noise Ratio (20 Hz-20 kHz): 100 dB
• Distortion (SMPTE-IM): Less than 0.02%
• Input Sensitivity @ 8 ohms: 1.07 V (+2.8 dBu)
• Maximum Voltage Gain: 56.2× (35 dB)
• Output Circuitry: Class H, 2 tier
• Damping Factor with 8 Load (direct outputs): Greater than 200; ISA 1350 greater than 250
• Output Regulation (isolated outputs): Less than 1.5 dB
• Input Impedance: 10 k unbalanced, 20 k balanced
• Input Clipping: 10 V rms (+22 dBu)
• Cooling: Continuously variable speed fan with back-to-front airflow
• Controls: Front AC switch, rear Ch. 1 and Ch. 2 gain knobs, 10-position DIP switch
• Indicators: Power-On (Green LED); Signal (Green LED per channel); Clip (Red LED per channel)

Package Contents

• QSC ISA750 2 Channels Commercial Power Amplifier
• Power Cord
• User Manual