Waterproof 4 Channel Digital MOSFET Amplifier – DMA4100BT

Stream music, podcasts, and audiobooks from your smartphone directly to your amplifier. This waterproof 4 channel class-D amp features molded endcaps and embedded wires, making it perfect for tougher marine installations while still powering 4 speakers.

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SKU: DMA4100BT Categories: ,

Conformal Coating

A transparent protective film is applied to surfaces of all interior printed circuit boards. This additional layer of defense guards against dust, condensation and corrosion – ensuring maximum longevity.

Music Streaming

Stream music, podcasts, and audiobooks from your smartphone directly to your amplifier. Use the included remote to control mode, volume, and track up/down.

IP66 Waterproof

Product is designed to meet the IP66 waterproof standard so as to provide protection against powerful water jets.

Molded End Caps with Wires Embedded

Designed not to allow water seepage from the sides even during heavy splashing or rain



  • Bluetooth 4.0 technology for audio streaming (A2DP, AVRCP)
  • Class D digital design
  • IP66 Waterproof
  • MOSFET Power supply
  • Low-level inputs (RCA)
  • Variable gain control
  • Built-in crossover (35Hz ~ 250Hz)
  • Bridgeable operation
  • 2 Ohm stable stereo operation
  • Damping factor <100
  • Fuse rating 30A
  • MRF40 Remote receiver and control included


  • Power output at 14.4 VDC, 10Hz ~35kHz
  • 75 W RMS at 4 channels at 4 Ohms and ≤ 0.05 % at 1 W 1kHz
  • 98 W RMS at 4 channels at 2 Ohms and ≤ 0.05 % at 1 W 1kHz
  • 140W RMS x 2Channel @ 4ohms (bridged)
  • Total RMS power output 300 W
  • Total dynamic power 1200 W
  • Signal to noise ratio 80dB (ref. 1 W into 4 Ohms)
  • Frequency response: 10Hz ~35kHz (4 Ohms)
  • Dimensions: 9” W x 3” H x 1.5” D

Manuals (PDFs)


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