ESX VMA700.1

The ESX VMA700.1 from the VISION Marine series is a powerful and exceptionally compact 1-channel digital amplifier designed specifically for use on boats and watercraft. Thanks to state-of-the-art Class D technology, this monoblock delivers an output power of up to 700 watts RMS while boasting a high efficiency of up to 91%.

To ensure reliable operation under demanding conditions, the VMA700.1 features a rugged enclosure with IP67 protection. This makes the amplifier dustproof and protects it against temporary submersion. All adjustment controls are located behind a watertight, screw-mounted cover, ensuring that the sensitive controls remain protected from moisture and external influences.

The ESX VMA700.1 is particularly well-suited for driving high-powered marine subwoofers. The built-in low-pass crossover, adjustable subsonic filter, and bass boost function allow for customization of bass reproduction. Thanks to its 1-ohm stability, it can also drive low-impedance subwoofer configurations.

Its compact dimensions make installation easy, even in tight spaces. RCA inputs and outputs, as well as an automatic power-on function, round out its extensive features.

Technical Specifications

General Characteristics

• Manufacturer: ESX

• Model: VMA700.1

• Series: VISION Marine

• Device Type: Digital Mono Amplifier

• Amplifier Class: Class D

• Number of channels: 1

• Operating voltage: 12-volt vehicle electrical system with negative ground

• Impedance stability: 1 ohm

• Protection Class: IP67

• Efficiency: Up to 91%

• Automatic power-on function: Yes

• Waterproof, screw-on cover for the adjustment controls
  
  

RMS Output Power at 14.4 Volts

• 1 × 275 watts RMS at 4 ohms

• 1 × 450 watts RMS at 2 ohms

• 1 × 700 watts RMS at 1 ohm
  
  

Audio Characteristics

• Frequency response (−3 dB): 10–250 Hz

• Damping factor: over 180

• Signal-to-noise ratio: over 80 dB

• Total Harmonic Distortion plus Noise (THD+N): less than 0.016%

• Input sensitivity: 0.3–7.1 volts
  
  

Crossover Networks and Sound Settings

• Low-pass filter (LPF): 50–250 Hz

• Subsonic filter: 10–50 Hz

• Bass Boost: 0–18 dB

• Bass boost center frequency: 45 Hz
  
  

Connections and Features

• 2 × RCA preamp inputs via cable connectors

• 2 × RCA preamp outputs via cable connectors

• Automatic Power-On Function

• Protected controls under a screw-fastened cover

• External device fuse: 1 × 60 amps

• 60-A fuse included
  
  

Dimensions

• Width: 108 mm

• Height: 51 mm

• Length: 218 mm
  
  

Special Features

• Designed specifically for marine audio applications

• Dust- and water-resistant housing rated IP67

• High output power in a compact design

• 1-ohm-stable monoblock

• Efficient Class D Amplifier Technology

• Adjustable low-pass and subsonic filters

• Adjustable Bass Boost

• RCA Inputs and Outputs

• Suitable for driving high-power marine subwoofers