4-Channel Class D Full-Range Marine Amplifier with Integrated DSP, 100 W x 4 @ 2 Ω / 75 W x 4 @ 4 Ω - 14.4V
Engineered to deliver reference-grade audio performance in marine environments, every MVi amplifier unites our cutting-edge NexD2™ switching amplifier technology with an integrated, full-featured digital signal processor.
Outfitted with our second-generation NexD2™ technology, the MV400/4i produces up to 75 watts per channel into 4 ohms, or 100 watts into 2 ohms. It can also be bridged into 4 ohms, generating up to 200 W x 2.
The NexD2™ full-range technology in this amplifier is DSP-controlled and features a reduced loop area design utilizing DirectFET™ outputs for outstanding fidelity, very low noise and exceptional efficiency. Housed in a compact, cast alloy chassis with marine-grade powder coat finish, the MV400/4i is outfitted with corrosion-resistant hardware and connectors.
Instead of traditional control knobs and switches, all amplifier adjustments and DSP functionality are configured via a compatible external device (PC, Tablet or Smartphone), with the appropriate JL Audio TüN® Software application installed.
Amplifier includes: Power Connector (for 4 AWG wire), Speaker Output Harnesses (2), 6 ft A/B USB Cable
Features:
Unprecedented, Onboard DSP Tuning Power!
2nd-Gen NexD2™ Switching Amplifier Technology
Ultra-Versatile Analog and Digital Inputs/Outputs

JLid™ System Command and Control with Networking Capabilities
Proprietary JL Audio protocol provides control interface and all communication for VXi amplifiers and optional JLid™ accessories, including:
Rated Continuous (RMS) Power @ 14.4 V
@ 4 Ω | 75 W RMS x 4 |
@ 2 Ω | 100 W RMS x 4 |
Bridged @ 4Ω | 200 W RMS x 2 |
Rated Continuous (RMS) Power @ 12.5 V
@ 4 Ω | 60 W RMS x 4 |
@ 2 Ω | 90 W RMS x 4 |
Bridged @ 4Ω | 180 W RMS x 2 |
General Specifications
Frequency Response | 12 Hz - 24 kHz (+0, -1dB) |
S/N Ratio, referred to highest rated power(Analog Inputs) | 99 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
S/N Ratio, referred to 1 W(Analog Inputs) | 80 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
Damping Factor @ 4 Ω | >100 / 50 Hz |
Damping Factor @ 2 Ω | >50 / 50 Hz |
THD+N @ Rated Power | <1% @ 2 Ω per Ch. |
Input Voltage Range @ RCA Inputs | 250 mV - 16 V RMS |
Min.Copper Power / Ground Wire Gauge | 4 AWG wire |
Fuse Rating | 40 A (AFS, AGU or MaxiFuse™) |
IP Rating | IPX2 (when mounted vertically with connections pointed downward) |
Physical Specifications
Height (H) | 2.05 in / 52 mm |
Width (W) | 11.20 in / 285 mm |
Depth (D) | 6.93 in / 176 mm |
Net Weight | 5.0 lb / 2.27 kg |