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Hertz Compact Power HCP 4DK - 4 Channel Amplifier


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The new Hertz HCP 4DK Amplifier features the latest generation D-Class 2Ω stable output stage reaching the impressive max power of 2000 W with the excellent S/N ratio of 105 dB. Extremely versatile, complete in its functions, provided with Speaker-In and RCA-In inputs to work with any head units, it has been designed to work also in mono (selectable mode), for a three-channel system with sub and front, or a powerful two-channels system.

All the Hertz Compact Power amplifiers are assembled with high-quality components and feature a complete and by-passable crossover system. The dissipation system is optimized with the heat being transferred to the heat sink and then dissipated through the sides of the amplifier.


  • Latest generation D-Class 2Ω stable output stage ensuring very high power with an excellent S/N ratio.
  • New layout design to improve efficiency and thermal stability.
  • Power supply featuring low noise multiple winding transformer, Low-ESR 150° C capacitors and selected components.
  • Compact design built from extruded aluminum heatsink with the top side ensuring effective transfer of the heat.
  • Special balanced high-noise rejection input circuitry on the Pre-In or Speaker-In inputs.
  • Speaker-In (for OEM head units) and RCA-In (for Aftermarket head units) inputs.
  • ART (Automatic Remote Turn-On/Off) automatically turns on/off the amplifier when the OEM radio turns on/off (can be enabled/disabled, with Speaker-In inputs).
  • Pre-outs, also available when using Speaker-In level inputs.
  • Mono operation mode (selectable) to create a sub + front three-channel system or a powerful two-channel system.
  • Bass Boost (50 Hz) adjustable to 12 dB, to increase the subwoofer punch.
  • Lo-Pass and Hi-Pass 12 dB adjustable (50 Hz to 3200 Hz) filters, providing the ability to build a front + rear system, a multichannel woofer + tweeter system or a powerful sub + front system.
  • Selectable full range power outputs.

Technical Specifications

Channel Mode 4 - 3 - 2
Output Power (RMS) @ 14.4 VDC 4 Ch: 150 W x 4 (4 Ω)
4 Ch: 250 W x 4 (2 Ω)
3 Ch: 150 W x 2 (4 Ω) + 520 W x 1 (4 Ω)
3 Ch: 250 W x 2 (2 Ω) + 520 W x 1 (4 Ω)
2 Ch: 520 W x 2 (4 Ω)








A/B: 50 ÷ 3.2k Hz @ 12 dB/Oct.

A/B: 50 ÷ 3.2k Hz @ 12 dB/Oct.



Distortion - THD (100Hz @ 4Ω) 0.03 %
S/N Ratio (A weighted @ 1V) 105 dB
Damping factor (100Hz @ 4Ω) 200
Size mm  315 x 190 x 50

Further Information

Hertz Compact Power HCP 4DK - Amplifier - Tech Sheet

Hertz Compact Power HCP 4DK - User Manual

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