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QSC CX-Q8K4 – 4-Channel 1250W Network Power Amplifier with Q-SYS Integration
QSC CX-Q8K4 – 4-Channel 1250W Network Power Amplifier with Q-SYS Integration - Image 2
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QSC CX-Q8K4 – 4-Channel 1250W Network Power Amplifier with Q-SYS Integration - Image 4

QSC CX-Q8K4 – 4-Channel 1250W Network Power Amplifier with Q-SYS Integration

•1250Watt @70V/100V, 1250W@8Ω, 2400W@4Ω, 2750W@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-Q8K4 is a high-power, 4-channel network amplifier, delivering up to 1250 watts per channel and designed for seamless integration with Q-SYS networked audio systems. Engineered for large-scale AV installations, the CX-Q8K4 supports both low-impedance and high-impedance (70V/100V) speaker loads, offering unmatched flexibility and performance.

Powered by QSC’s FlexAmp and FAST (Flexible Amplifier Summing Technology™), it allows dynamic power allocation across channels to meet varying output needs—optimizing system performance. The native Q-SYS integration ensures intelligent monitoring, configuration, and control via the Q-SYS platform.

Its Class-D amplification provides high efficiency and low thermal output, while network audio support (Dante™ and AES67) makes it suitable for modern digital AV infrastructures. The rack-mountable design and robust build make it perfect for stadiums, auditoriums, corporate campuses, and hospitality venues requiring scalable, high-quality audio distribution.

Specifications

Specification Details
Configuration 4‑channel (CX‑Q 8K4 model)
Maximum Power (total) Up to 8,000 W
Continuous Power per Channel 1,250 W at 70 V / 100 V direct drive; 625 W @16 Ω; 1,250 W @8 Ω; 2,400 W @4 Ω (burst)
Amplifier Design 5th‑gen Class‑D hybrid (PowerLight™ platform)
Channel Flexibility FlexAmp™ and FAST (bridge/parallel modes)
Impedance / Drive Modes Low‑Z, 70 V, 100 V direct drive on all channels
Inputs 4× analog mic/line inputs with +12 V phantom power
GPIO Ports 8 bi‑directional GPIO for external control
Network Integration Native Q‑SYS Q‑LAN audio/control routing/monitoring
Power Efficiency Universal switch‑mode PSU with active PFC, multi‑stage sleep modes
Frequency Response 20 Hz–20 kHz, ± 0.2/‑0.7 dB
THD (Total Harmonic Dist.) 0.02–0.05% @8 Ω, 0.04–0.1% @4 Ω
Gain 38 dB (1.2 V input setting)
Damping Factor >150
Noise Muted: >102 dB (unweighted); >106 dB (A‑weighted)
Protection Features Short‑circuit, thermal, over‑current, RF, DC fault, inrush limit, auto mute
Dimensions (HxWxD) 3.5 × 19 × 16 in (89 × 482 × 406 mm)
Net Weight ~26 lb (11.8 kg); Shipping ~30 lb (13.6 kg)
Compliance UL, CE, RoHS/WEEE, FCC Class B

Features

  • Native Q‑SYS integration for easy drag‑and‑drop configuration and monitoring

  • FlexAmp™ & FAST technology for maximum channel flexibility

  • High‑efficiency Class‑D platform with PowerLight™ design

  • Built‑in mic/line inputs with phantom power

  • 8 GPIO ports for external triggers and system integration

  • Automatic energy‑saving sleep modes

  • Touch‑proof Euroblock speaker connectors for secure wiring

  • Advanced protection circuitry for reliable operation

What’s in the Box ?

  • QSC CX‑Q 8K4 amplifier unit

  • IEC power cable

  • Quick‑start guide

  • Four Euroblock speaker connectors

  • Mic/line input Euroblock connectors

  • User manual and safety information sheets

Additional Resources

User-Manual :

Download

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