"Rattling heads since 2010"




  • Peak Power 400W
  • RMS 45W x 4 (4Ω)
  • RMS 45W x 4 (2Ω)
  • Conformal Coating for Marine and Other use.
  • Speaker Level Input with Signal Sensing Turn on.
  • Bridgeable Connection.
  • Compact design ( W)5-11/16″ x (H)1-3/4″ x (D)3-7/8″


  • For Automobile

  • For Marine

  • For ATV

  • For Motorcycle

KAC-M1814 Compact Class-D amplifier supports louder volume for Car, Marine and Motorsports users with low-noise.

Plastic covered connector helps to keep out water and dust.

Conformal Coating provides vibration resistance and helps prevent the PCB from rusting.

Pre-amp and Power-amp sections are separated to reduce radiation noise.

Compact design with controlable interface to adjust the sound from a receiver.
① Filter Frequency Control (A.ch/B.ch)
② Filter Switch to apply HPF / OFF / LPF (A.ch/B.ch).
③ Line In terminal
④ Input Sensitivity Control (A.ch/B.ch)

General Features

Max Power 400W
RMS Power 45W x 4 (4Ω)
45W x 4 (2Ω)
90W x 2 (Bridged)
S/N Signal to Noise Ratio: 98 dB
Size (W)5-11/16” x (H)1-3/4” x (D)3-7/8”
Low Pass Filter 50Hz-200Hz, -12dB/oct (A/B)
High Pass Filter 50Hz-200Hz, -12dB/oct (A/B)
Speaker Level Input
Signal Sensing Turn-On
Variable High & Low Pass Filter
Conformal Coating