CX-Q 4K4

Four-Channel Network Amplifier for the Q-SYS Ecosystem


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 of the Q-SYS Ecosystem.  CX-Q 4K4 features four 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.


Features and Benefits

Q-SYS Ecosystem Integration – 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 – Four 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

Traditional Amplifier Solution

Traditional amplifiers lock the “per channel” power distribution, which limits an amplifier’s capabilities to use the amplifiers total power.

  • Loudspeakers on Channel 1 and 2 only require 240 W and 900 W.  This results in a total of 860 W of unused, wasted power on those channels.
  • Loudspeakers on Channel 3 and 4 require 1200 W and 1500 W, but channel C and channel D are only capable of outputting 1000 W per channel. To solve this issue, a second amplifier needs to be deployed, which is both inefficient and costly!


QSC Amplifier Solution

  • FlexAmp™ allows for asymmetric output channel loading by drawing from large power reserves and distributing customized output power levels to each channel
  • FAST (Flexible Amplifier Summing Technology™) allows channels to be combined in bridge mode, parallel mode or bridge/parallel mode to deliver either high voltage loads (up to 200 Vrms) or higher current loads (up to 35 A)

These two technologies enable far more fluid power distribution and ultimately decrease system cost by reducing wasted power and channels, while removing the need to specify multiple amplifiers with different power ratings in a multi-zone installation.


General Specifications

  CX-Q 2K4 / CX-Qn 2K4 CX-Q 4K4 / CX-Qn 4K4 CX-Q 8K4 / CX-Qn 8K4
Typical distortion   
 0.02 - 0.05%
4Ω  0.04 - 0.1%
Maximum distortion 4Ω - 8Ω 1.0%
Frequency response 20 Hz - 20 kHz +0.2 dB / -0.7 dB
Unweighted output muted > 102 dB 
Weighted output muted  > 106 dB  
Gain (1.2V setting) 33 dB 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 2K4 / CX-Qn 2K4  CX-Q 4K4 / CX-Qn 4K4 CX-Q 8K4 / CX-Qn 8K4
  Max Power Max Power Max Power
4 Independent Channels
A, B, C, D
70V 700 W 1000 W 1250 W
100V 700 W 1000 W 1250 W
16Ω 350 W 500 W 625 W
800 W 1000 W 1250 W
800 W 1500 W 2400 W
600 W 800 W 2750 W
2 Channel BTL Bridged
A+B or C+D 
Doubles Voltage
140V 1500 W 2000 W 2400 W
200V 1500 W 2000 W 2400 W
1500 W 3000 W 4000 W
1400 W 1700 W 5000 W
NR* NR* 3000 W
2 Channels Parallel
AB or CD
Doubles Current 


70V 1400 W 2000 W 2400 W
100V 1400 W 2000 W 2400 W
800 W 1000 W 1250 W
1250 W 2000 W 2400 W
1500 W 2500 W 4000 W
3 Channels Combined in Parallel ABC Triples Current


800 W 1000 W 1250 W
1250 W 2000 W 2400 W
1500 W 3000 W 4500 W
1 Channel Bridged/Parallel
AB+CD Doubles Current and Voltage


2500 W 3500 W 4200 W
3000 W 4000 W 7000 W
NR* NR* 8000 W
4 Channels Combined in Parallel ABCD Quadruples Current


800 W 1000 W 1250 W
1250 W 2000 W 2500 W
1700 W 4000 W 5000 W
2500 W 4000 W 7000 W

NR* = Not Recommended due to excessive current draw

Controls, Indicators and Connections

  CX-Q 2K4 / CX-Qn 2K4 CX-Q 4K4 / CX-Qn 4K4 CX-Q 8K4 / CX-Qn 8K4
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
Output connectors 8-pin Euro (green)