QSC CX-Q 2K4 – Four-Channel Q-SYS Network Amplifier (500W/ch)
QSC CX-Q 2K4 – Four-Channel Q-SYS Network Amplifier (500W/ch) is backordered and will ship as soon as it is back in stock.
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QSC CX-Q 2K4 – Four-Channel Q-SYS Network Amplifier (500W/ch)
Product Overview
The QSC CX-Q 2K4 is the entry-level model in the CX-Q family of four-channel Q-SYS network amplifiers, with a 2,000 W power supply and Low-Z, 70 V, and 100 V direct drive on every channel. As a fully native Q-SYS component, it integrates into Q-SYS Designer Software with drag-and-drop routing, processing, monitoring, and fault reporting — eliminating the external controllers and middleware required by third-party amplifiers. FlexAmp and FAST allow channels to be reconfigured to match speaker loads without rewiring, making the 2K4 a flexible foundation for multi-zone commercial installations.
Product Description
Built on QSC’s PL380 PowerLight platform with a 5th-generation Class-D hybrid powertrain, the CX-Q 2K4 combines proven amplifier robustness with native network transport and control. FlexAmp draws from a large power reserve to distribute customized output levels per channel, while FAST (Flexible Amplifier Summing Technology) lets channels be bridged, paralleled, or combined for higher-voltage or higher-current loads. Four mic/line inputs with +12 V phantom power act as additional Q-SYS on-ramps directly at the amplifier, and eight bi-directional GPIO connections enable third-party device control without a separate processor. A universal switchmode supply with active power factor correction and multi-stage sleep modes keeps efficiency high across global line voltages. The CX-Q 2K4 fits four network-addressable channels into 2RU. For higher per-channel power, step up to the CX-Q 4K4; for more zones, see the eight-channel CX-Q 4K8.
Key Features
- Native Q-SYS integration — Drag-and-drop routing, processing, monitoring, and fault reporting in Q-SYS Designer.
- 2,000 W power supply, four channels — Low-Z, 70 V, and 100 V direct drive on every channel.
- FlexAmp power distribution — Asymmetric per-channel output drawn from a shared reserve to match real zone loads.
- FAST channel summing — Bridge, parallel, or bridge/parallel modes for higher voltage or current loads.
- Four mic/line inputs — +12 V phantom power; additional Q-SYS on-ramps at the amplifier.
- Eight bi-directional GPIO — Local third-party device control without a separate processor.
- Efficient power platform — PL380 PowerLight with active PFC and multi-stage sleep modes.
Typical Applications
- Commercial meeting space — Networked multi-zone amplification within a Q-SYS system.
- Conference room — Q-SYS-native amplification with local mic/line on-ramps.
- House of worship — Distributed 70V/100V and low-impedance zones from one amplifier.
- Multi-purpose room — Flexible channel configuration for changing speaker loads.
- Auditorium — Network-managed amplification with fault monitoring.
Technical Specifications
| Channels | 4 (network-addressable) |
| Power supply (max) | 2,000 W |
| 8 Ω (max / continuous) | 700 W / 400 W |
| 4 Ω (max / continuous) | 800 W / 400 W |
| 70 V (max / continuous) | 700 W / 350 W |
| 100 V (max / continuous) | 700 W / 400 W |
| Frequency response (8 Ω) | 20 Hz – 20 kHz, +0.2 / -0.7 dB |
| Inputs | 4 mic/line (+12 V phantom), 3-pin Euro + Q-LAN |
| GPIO | 8 bi-directional |
| Power supply type | Universal 100–240 VAC, 50–60 Hz, active PFC |
| Dimensions (HWD) | 3.5 x 19 x 16 in (89 x 482 x 406 mm), 2RU |
| Net weight | 23 lb (10.4 kg) |
| Approvals | UL, CE, RoHS/WEEE, FCC Class B |
Max power: 20 ms, 1 kHz burst, single channel driven. Continuous: 20 Hz–20 kHz, all channels driven at the same load.
Frequently Asked Questions
Does the CX-Q 2K4 require a Q-SYS Core?
The CX-Q amplifiers are native Q-SYS components managed from a Q-SYS Core through Q-SYS Designer Software, which provides routing, processing, monitoring, and fault reporting.
Can a single amplifier drive both 70V/100V and low-impedance speakers?
Yes. Every channel offers Low-Z, 70 V, and 100 V direct drive, and FlexAmp distributes power per channel to match each zone.
What do FlexAmp and FAST do?
FlexAmp allocates power asymmetrically across channels from a shared reserve; FAST bridges, parallels, or combines channels to deliver higher voltage or current for demanding loads.
What are the mic/line inputs for?
The four mic/line inputs with phantom power serve as additional Q-SYS on-ramps directly at the amplifier, useful for local sources.
What about warranty and support?
Refer to QSC warranty terms for coverage. For Q-SYS design and purchasing questions, contact Creation Networks support.
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 ship within 24-48 hours. 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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