MPA700.4D Front
MPA700.4D Precision Power Marine Atom


Marine ATOM Series Class-D Amplifier

Channels 4Ch.
MAX Power 1,400W
RMS Power 4Ω 100 x 4
RMS Power 2Ω 175 x 4
RMS Bridged 4Ω  350 x 2
Product Description

ATOM amplifiers adopt the finest class D performance, reliability, and footprint of the original ATOM and iOn platforms. At first glance, you’ll notice several key improvements. Atom’s signal inputs, power/ground, and speaker connections are all relocated to the leading edge of the chassis, for an easier, more appealing install. All pre-amp & crossover options are conveniently located on the backside. What you might not notice are additions to the circuit board, including improved power supply & output stage components, & monoblock bridging capability. The installation of ATOM amplifiers is unique, using mounting pedestals at each corner. The pedestals elevate the heatsink, improving airflow around and underneath the chassis. Additionally, rubber grommets under and inside each pedestal electrically isolate the amplifier chassis from the vehicle chassis, reducing the potential for ground loop noise.


  •  Gloss White Marinized – Hybrid Aluminium Alloy Heatsink
  • Chassis Electrical Isolation & Air Convection Mounting Pedestals
  •  MOSFET Power Supply w/ Audiophile Grade IRTM Transistors
  • Military Grade SMT PCB Maintains Dynamic Performance
  • Direct Short, Thermal, & Overload Circuits Protect Amplifier
  • 250mV-6V Low-Level RCA or High-Level Signal Input
  • Thru-Out for Daisy Chain Configuration Compatibility 
  •  Easy DIY Install Single-Sided Terminals & Controls
  • 4g Power Input Terminals & 12g Speaker Output Terminals
  • Variable 12dB High Pass, Low Pass, & Subsonic Crossovers
  • 12dB Bass Boost Increases Low Octave Harmonics
  • 40 Amp Fusing Rating


Channels 4Ch. Class D
MAX Power 1,400W
RMS Power 4Ω 100 x 4
RMS Power 2Ω 175 x 4
RMS Bridged 4Ω 350 x 2
Remote Gain Control
Dimensions: (6”w x 2.25”h) 10.00”


Owners Manual [.PDF]