• KAC-M1814

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Compact 4-Channel Digital Amplifier

The Multi-Application KAC-M1814 Compact 4 channel Class-D amplifier with 400 peak power supports louder volume for Car, Marine and Motorsports users with low-noise. Plastic covered connector helps to keep out water and dust and the Conformal Coating provides vibration resistance and helps prevent the PCB from rusting. RCA Line-In terminal or Speaker Level Input, with Signal Sensing Turn-on, to connect any type of receiver. and/or Filter Frequency Control and Filter Switch to apply HPF / OFF / LPF. Bridgeable Connection. Pre-amp and Power-amp sections are separated to reduce radiation noise.

  • Class D Amplifier
  • Full Range Digital Amplifier
  • CEA-2006 Compliant
  • Low-pass Filter
  • High-pass Fliter
  • Speaker level Input
  • Die-Cast Aluminium Heat Sink

Key Features

4 channel digital (Class D) amplifier
Maximum output power 400W
4 x 45W @ 4ohm (CEA-2006 standard)
RCA / Speaker level input
Signal sensing turn-on/off
Variable Low- & High-Pass filter
Compact size (145 x 45 x 99mm)
Conformal coating protection

Amplifier Features

Class D AmplifierYes
Full Range Digital AmplifierYes
Load Capability4Ω Stable
Maximum power output400W
Rated power output (4Ω)45W x 4 (4Ω)
CEA-2006 CompliantYes
Low-pass FilterYes
High-pass FliterYes
Switched Mode Power supplyYes, Power MOS-FET
Signal Sensing Turn-onYes
Line in4 RCA / Speaker level
Speaker level InputYes
Die-Cast Aluminium Heat SinkYes
DC cable SuppliedYes


Rated power output (CEA-2006)45Watts RMS x 4 at 4 ohms and 1% THD
Low-pass Filter50~200Hz (-12dB/oct)
High-pass Fliter50~200Hz (12dB/oct)
Input Impedance10kΩ
Signal to Noise Ratio98dB
Signal to noise ratio (CEA-2006)82dBa (Reference: 1 Watt into 4 Ohms)
Frequency response (+0dB, -3dB)20Hz ~ 20Hz
Operating voltage14.4V (11V ~ 16V allowable)
Maximum current consumption15A
Dimensions (WxHxD)145 x 45 x 99(mm),
Unit weight in individual package0.99 kg.