ESX Audio
ESX VMA700.4 Marine 4-Channel Class D Amplifier
Amplifier
Why choose this product?
ESX VISION marine amplifiers are built for boats and other demanding locations, with IP67 protection for dust and temporary immersion resistance. The VMA700.4 is the 4-channel model in that range and is designed to power front and rear speaker systems where a radio alone does not provide enough output.
The official English ESX page confirms 4 x 115W RMS at 4 ohm, 4 x 175W RMS at 2 ohm and 2 x 350W RMS bridged at 4 ohm. It uses efficient Class D amplification, RCA inputs, auto turn-on, protected controls behind a screwed cover, separate HPF/LPF filtering for channel pairs 1/2 and 3/4, a 2CH/4CH input mode switch and a compact 108 x 51 x 248 mm chassis.
Key specifications
- Marine 4-Channel Class D Digital Amplifier
- 4 x 115/175 Watts RMS @ 4/2 ohm
- 2 x 350 Watts RMS @ 4 ohm bridged
- HPF/LPF 50 - 500 Hz (CH1/2)
- HPF/LPF 50 - 500 Hz (CH3/4)
- Input Mode Switch 2CH/4CH
- Dimensions 108 x 51 x 248 mm
- Efficiency up to 87%
Best used for
Use the VMA700.4 for marine front and rear speaker systems where compact size, IP67 protection and real multi-channel output matter. Check speaker impedance, mounting location and system layout before ordering.
Key features
- Protection classification: IP67
- RCA inputs
- Auto turn-on
- Marine 4-channel Class D digital amplifier
- 4 x 115/175W RMS at 4/2 ohm
- 2 x 350W RMS at 4 ohm bridged
- HPF/LPF 50 - 500 Hz on CH1/2
Technical details
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
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.