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Hertz HMP 4D

Hertz HMP 4D


Thanks to the ultra-compact cast-aluminium chassis (IP64 rated), the HMP 4D amplifier is nature-proof, being the ideal choice for UTV/ATV/motorcycle installations. It features an incredible power/size ratio and an easy setup thanks to the integrated crossover filter. The Front End section features a complete and bypassable crossover system, providing full system design flexibility with or without external processors, offering the user endless connection possibilities with any source. Inputs feature a special balanced circuitry, ensuring high rejection against electro-magnetic interferences, for noise-free results.


  • compact 4-channel amplifier for ATV, motorcycle, boat, or car
    • 50 watts RMS x 4 at 4 ohms
    • 65 watts RMS x 4 at 2 ohms
    • 130 watts RMS x 2 bridged at 4 ohms
  • Class D amp technology
  • selectable high-pass filter on front channels (full, 65, 85, 115 Hz at 12 dB/octave)
  • selectable high- or low-pass filter on rear channels (full, 65, 85, 115 Hz at 12 dB/octave)
  • IP64 grade protection against water spray, ASTM-D4329 standards for UV resistance, and ASTM-B117 for salt fog operability
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