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QSC

QSC ISA750 2-Channel Commercial Power Amplifier

$249.95 -

The ISA-750 Commercial Power Amplifier from QSC is a 3-RU rackmount power amplifier designed specifically for sound contractors. It can be used as a low-impedance solution rated for 2-Ohm operation at 1200W per side, or 8-Ohm operation at 450W per side. The versatile loading options, feature set, and protection circuitry, in addition to the built-in HD-15 DataPort V2 DSP interface capability, ensures a high-value, cost-effective solution for budget-minded installations.

View Product Features

  • 450W Per Channel: Power at 8Ω
  • 2Ω Loading Support: Versatile impedance options
  • Class H Circuitry: High-efficiency performance
  • DataPort V2 Connector: External DSP interface
  • Rear Gain Controls: Tamper-resistant operation
  • Selectable HPF: Speaker saturation protection
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About the QSC ISA750 2-Channel Commercial Power Amplifier

The QSC ISA750 is a robust two-channel commercial power amplifier engineered specifically for the demanding requirements of installed sound applications such as background music, paging, and voice reinforcement systems. Part of the Installer Series, this amplifier is designed for reliable, continuous operation in 24/7 environments like retail stores, restaurants, schools, offices, and hospitality venues. It delivers substantial power in both low-impedance and high-impedance (70V/100V) configurations, providing installers with the flexibility to drive a wide variety of speaker loads from a single, dependable unit. The amplifier's design emphasizes thermal management and protection, incorporating a variable-speed fan and comprehensive safeguards against overheating, short circuits, and other fault conditions to ensure long-term system stability.

A key feature of the ISA series is the integration with QSC's proprietary Q-SYS ecosystem via the installed Q-LAN network, although the ISA750 also functions perfectly as a high-quality standalone analog amplifier. When networked, it allows for remote monitoring and control of key parameters such as gain, mute status, and power consumption from a central Q-SYS Core processor, simplifying system management and troubleshooting in large or hard-to-access installations. The front panel provides clear status indicators for power, signal, and clipping, along with level controls for each channel. The rear panel features secure, professional connections including barrier strip blocks for both audio input and speaker output, which are favored in permanent installations for their reliability and secure wiring.

Built into a standard 2U rackmount chassis, the ISA750 is constructed with a heavy-duty steel frame and designed for high-density rack mounting to optimize space in equipment closets. Its combination of high power output, versatile load compatibility, and networked control capabilities makes it a cornerstone component for modern commercial audio systems. For system integrators seeking an amplifier that balances powerful performance with the manageability and scalability required for today's networked AV environments, the QSC ISA750 offers a proven and professional solution.

Key Features

  • 450W Per Channel: Power at 8Ω
  • 2Ω Loading Support: Versatile impedance options
  • Class H Circuitry: High-efficiency performance
  • DataPort V2 Connector: External DSP interface
  • Rear Gain Controls: Tamper-resistant operation
  • Selectable HPF: Speaker saturation protection

QSC ISA750 2-Channel Commercial Power Amplifier Specs

Amplifier Performance
Power per Ch (8Ω)
250 W
Power per Ch (4Ω)
375 W
Constant Voltage
70V, 100V
Control & Monitoring
Control Interface
Q-SYS (Q-LAN) Networkable
Front Panel Controls
Level, Mute
Status Indicators
Power, Signal, Clip, Protect
Protection & Cooling
Protection Circuits
Thermal, Short, Open, DC
Cooling
Variable Speed Fan
Physical & Electrical
Rack Units
2U
Input Connector
Barrier Strip
Output Connector
Barrier Strip
AC Power
100-240V, 50/60 Hz

Key Features

  • 450W Per Channel: Power at 8Ω
  • 2Ω Loading Support: Versatile impedance options
  • Class H Circuitry: High-efficiency performance
  • DataPort V2 Connector: External DSP interface
  • Rear Gain Controls: Tamper-resistant operation
  • Selectable HPF: Speaker saturation protection
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