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
  • Perfect for tougher marine installations while still powering 4 speakers

Retail Exclusive:
No Longer Available

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.

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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.

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IP66 Waterproof

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

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Molded End Caps with Wires Embedded

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

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dma4100bt wiring



  • 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)

Read Prop 65 WARNING for California Residents

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