Current version

This product replaces an earlier version.

Confirmed v3 replacement for Q-FOURv2 12V. Old-side superseded/replaced_by is intentionally pending until this draft is approved for Online Store publication.

Older version: Esx Quantum 4Ch Digital Amp Q-Fourv2 12V

ESX Audio

ESX Q-FOURv3 4-Channel Class D Amplifier

Amplifier

£209.99
Available to order
Amplifier 4 SKU Q-FOURv3 Manual included
Fitment System planning support
Tech specs Shown below
Manuals/downloads Download linked
Warranty Manufacturer backed
Plan the system before checkout Check channel layout, power, impedance and DSP requirements before choosing wiring or speakers.
Why choose this product?
The ESX Q-FOURv3 is a compact QUANTUM Q 4-channel Class D amplifier for 12 volt systems, with 4 x 120W RMS at 2 ohm, bridgeable 2 x 200W output, high-level EPS inputs, Auto Turn-On, Start/Stop readiness and flexible filtering for tight multi-speaker installs.
Why choose the ESX Q-FOURv3
4-channel QUANTUM Q V3 Class D compact digital amplifier for 12V vehicle systems, with Constant Power output, high-level inputs with EPS, Auto Turn-On, Start/Stop readiness, flexible HPF/LPF filtering, Dupe Mode, Bass Boost, 150 x 50 x 220 mm chassis and up to 84% efficiency.
Technical specifications
Amplifier type: 4-channel Class D compact digital amplifier Vehicle voltage: 12V vehicle electrical systems Power output: 4 x 100W RMS at 4 ohm; 4 x 120W RMS at 2 ohm; 2 x 200W RMS bridged at 4 ohm Inputs: RCA input; high-level input with EPS Turn-on: Auto Turn-On; Start/Stop ready Filters: HPF 20-4000 Hz on CH1/2; HPF 10-500 Hz on CH3/4; LPF 50-4000 Hz on CH3/4 Channel routing: Dupe Mode CH3/4 to CH1/2 Bass boost: 0-12 dB Dimensions: 150 x 50 x 220 mm Efficiency: up to 84%
Compatibility and support

For vehicle-specific advice, send your vehicle make, model, year, current factory audio setup and what you want to improve.

We reply by email or WhatsApp so you have the recommendation in writing.

Downloads
Download owner manual Manufacturer documentation supplied where available.

Need fitment help?

Ask before ordering if the vehicle, wiring or DSP setup is unclear.

Send the make, model, year, factory audio setup and what you want to improve. We’ll reply in writing so you have the advice to refer back to.

WhatsApp compatibility help Email us
ESX Q-FOURv3 4-Channel Class D ... £209.99