QSC CX-Q 4K8 Eight-channel Network Amplifier for the Q-SYS Ecosystem

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Sale price$5,820.00


Spec Sheet

Q-SYS CX-Q Series network amplifiers combine a legacy of robust power amplifiers, advancements in high-efficiency output devices and native network transport, control and monitoring capabilities. CX-Q 4K8 features eight channels, capable of delivering customized power output loading and a total maximum power of up to 4000 W. Low-Z, 70 V or 100 V direct drive are available on all channels.

Build for Q-SYS – Simple drag-and-drop integration into your Q-SYS design, enabling network routing, advanced processing and control.

Legacy of power redefined – These network amplifiers are built with a 5th generation high-efficiency, Class-D hybrid powertrain design built upon the dependable PL380 PowerLight™ amplifier platform.

Flexible & efficient channel power distribution – CX-Q Series network amplifiers feature FlexAmp™ and FAST (Flexible Amplifier Summing Technology™), which combine to provide extreme flexibility in output deployment.  

Routable input options  – Eight channels of mic/line inputs (with +12 V phantom power) for additional on-ramps into Q-SYS.

Additional Features

  • PowerLight universal switchmode power supply with PFC for highest efficiency, improved audio performance and low weight
  • Touch-proof Euroblock loudspeaker connections
  • Eight bi-directional GPIO connections for further control and integration of third-party peripherals within Q-SYS
  • Automatic energy saving modes ensure that the amplifier will draw the minimum amount of AC power while still providing outstanding audio quality


General Specifications

  CX-Q 4K8 CX-Q 8K8
Typical distortion   
 0.02 - 0.05%
 0.04 - 0.1%
Maximum distortion 4Ω - 8Ω 1.0%
Frequency response 20 Hz - 20 kHz +/- 0.3 dB
Unweighted output muted > 101 dB
Weighted output muted   > 104 dB  
Gain (1.2V setting) 35 dB 38 dB
Damping factor > 100
Input impedance > 8k balanced and > 4k unbalanced
Amplifier and load protection Short circuit, open circuit, over current, over voltage, thermal, RF,
DC fault shutdown, active inrush limiting, on/off muting
AC power input Universal power supply 100 - 240 VAC, 50 - 60 Hz
Agency approvals UL, CE, RoHS/WEEE compliant, FCC Class B (conducted and radiated emissions)
Carton contents IEC cable, quick start guide, Euro (green) connectors


Power Specifications

  CX-Q 4K8 CX-Q 8K8
  Max Power Max Power
8 Independent Channels A, B, C, D, E, F, G, H 70V 1000 W 1250 W
100V 1000 W 1250 W
1000 W 1250 W
 4Ω 1000 W 1500 W
 2Ω 800 W 1000 W
2 Channels BTL Bridged
A+B or C+D or E+F or G+H
Doubles Voltage


140V 1500 W 2000 W
200V 1500 W 2000 W
1500 W 3000 W
1400 W 1700 W
2 Channels Parallel
AB or CD or EF or GH
Doubles Current


70V 1500 W 2000 W
100V 1500 W 2000 W
1000 W 1250 W
1250 W 2400 W
1500 W 2500 W
3 Channels          Combined in Parallel
Triples Current


1000 W 1250 W
1500 W 2000 W
1500 W 2500 W

4 Channel Bridged/Parallel
Doubles Current and Voltage


2500 W 4000 W
3000 W 5000 W
4 Channels          Combined in Parallel
Quadruples Current


1000 W 1200 W
2000 W 2400 W
2500 W 4000 W
3000 W 4000 W

NR* = Not Recommended due to excessive current draw

Controls, Indicators and Connections

  CX-Q 4K8 CX-Q 8K8
Controls and indicators (front) Power • Channel MUTE buttons • Channel SELECT buttons • Channel Input Signal and CLIP LED Indicators Channel Output and LIMIT LED meters • NEXT, PREV, ID buttons • Control knob
Controls and indicators (rear) AC Power Disconnect (IEC C-14)
Input connectors "Q" models - 3-pin Euro (green) and Q-LAN Network connectivity
"Qn" models - Q-LAN Network connectivity only
Output connectors 8-pin Euro (green)

Weights and Dimensions

  CX-Q 4K8 CX-Q 8K8
Dimensions (H×W×D) mm 89 × 482 × 406 89 × 482 × 406
Dimensions (H×W×D) in 3.5 × 19 × 16 3.5 × 19 × 16
Weight net 11.3 kg / 25 lb 11.8 kg / 26 lb
Weight shipping 13.2 kg / 29 lb 13.6 kg / 30 lb

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

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