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QSC CX-Q2K4 – 4-Channel Network Power Amplifier, 700W per Channel

•700Watt @70V/100V, 700W@8Ω, 800W@4Ω, 600W@2Ω Per Channel (4channel)
•Frequency Response:- 20 Hz – 20 kHz +0.2 dB / -0.7 dB
•Signal to Noise > 106 dB
•Short circuit, open circuit, over current, over voltage, thermal, RF, DC fault shutdown, active inrush limiting, on/off muting
•Simple drag-and-drop setup for easy design Q-SYS integration
•5th generation Class-D hybrid powertrain for reliable performance.
•Features FlexAmp™ and FAST™ for adaptable output options.

The QSC CX-Q2K4 is a powerful and intelligent 4-channel network amplifier, delivering up to 700 watts per channel with advanced onboard DSP and full integration into the Q-SYS Ecosystem. Designed for high-performance, mission-critical audio applications, this amplifier supports both Low-Z and 70V/100V high-impedance systems, making it ideal for large-scale installations such as corporate, hospitality, stadiums, and educational environments.

The CX-Q2K4 features QSC’s FlexAmp™ and FAST™ (Flexible Amplifier Summing Technology), which allow the output power to be distributed across channels as needed, offering maximum design flexibility. With Q-SYS network control and monitoring, integrators can manage system status, diagnostics, and configuration remotely.

The amplifier operates with class-leading efficiency, reducing power consumption and heat generation. With comprehensive protection circuitry, robust build quality, and scalable integration capabilities, the CX-Q2K4 ensures reliable and consistent audio delivery.

Specifications

Feature Details
Model QSC CX-Q2K4
Amplifier Type 4-channel Class-D network amplifier
Power Output 4 × 700W (FlexAmp-enabled)
Load Compatibility Low-Z (4/8Ω) and High-Z (70V/100V)
DSP Integration Built-in DSP with full Q-SYS Ecosystem compatibility
Flexible Power Sharing FAST™ and FlexAmp™ technology for dynamic power distribution
Network Connectivity Q-LAN over standard Ethernet
Monitoring & Control Q-SYS control interface with diagnostics, alerts, and performance data
Cooling System Variable speed fan with intelligent thermal management
Energy Efficiency ENERGY STAR® qualified
Applications Corporate AV, stadiums, large venues, hospitality, education
Mounting Standard 2U rack-mountable

Features

  • Native Q‑SYS platform integration, enabling drag‑and‑drop audio transport, monitoring, and remote control over Ethernet

  • 700 W RMS per channel, configurable for Low‑Z, 70 V or 100 V output modes, with up to 2000 W aggregate capacity 

  • FlexAmp™ and FAST (Flexible Summing Amplifier Technology™) for asymmetric and summed channel loading, maximizing system flexibility and power efficiency

  • Built on PowerLight™ universal switch‑mode power supply with PFC ensures high efficiency, light weight, and thermal stability 

  • Integrated mic/line inputs (4 channels) with phantom power and 8 bi‑directional GPIO ports for expanded system routing and integration 

  • Energy-saving multi-stage sleep modes reduce idle power draw without compromising audio performance 

  • Solid protection suite: over-current, thermal, short-circuit, and environmentally compliant certifications 

  • Standard 2 RU rack profile with Ethernet redundancy and front-panel LCD/knob interface for local control and diagnostics

What’s in the Box ?

  • QSC CX‑Q2K4 network amplifier unit

  • IEC power cable

  • Quick‑start guide

  • Green Euroblock speaker connectors

  • Warranty card and safety documentation

Additional Resources

User-Manual :

Download

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