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Hertz Digital Power Series 4-Channel Amplifier - HDP 4

Abt Model: HDP4 | UPC Code: 8018823108089
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Product Details

Hertz Digital Power Series 4-Channel Amplifier - HDP4

HDP 4 is a D-Class four-channel amplifier, perfect to satisfy any need. It is the most compact HDP; nonetheless, like the other models, it can reach very high power levels: in less than 30 cm (12 inches) it can provide up to 1000W on 2 channels at 4 Ohm! It can be used in full range as well as with crossover settable as Lo-Pass/Hi-Pass.

It has been thought to offer the user the maximum possible flexibility, both thanks to Speaker In and RCA inputs and to the controls, with a status monitor communicating to the user through a LEDs system. Using Speaker In inputs, the ART™ ( Automatic Remote Turn On-Off) function is available; the user can also switch it off.

HDP 4 is the perfect choice for those who look for performance and non-bulky sizes. The double-extrusion heat sink and the Hertz logo, which is back lit and can be rotated, allow especially sophisticated installations.


  • Thermally optimized double extruded heatsink, ergonomic and aluminium die-cast end caps
  • 4 LEDs monitor the status of the amplifier and communicate with the user
  • Special balanced input circuitry to reject electromagnetic disturbances present on the Pre-amplified or Speaker level inputs;
  • HDP Input featuring either Speaker In (OEM radio) and RCA In (Aftermarket radio) inputs
  • ART™, Automatic Remote Turn-On/Off function, automatically turns on and off the amplifier when the OEM radio turns on and off (available on Speaker In only)
  • Full range Pre-out, also available when using Speaker Level In inputs
  • 12 dB/Oct. continuously adjustable (50 to 5k Hz and 80 to 3.3k Hz) active crossover with Lo-Pass/Hi-Pass or Full Range settings
  • A/B Input switch eliminates the need for RCA Y-Adapters
  • Power supply stage featuring multiple winding transformer, Low-ESR 105°C capacitors, D-Class 2Ohm stable output stage based on solid T220-5pin power Mosfets


  • Channel Model: 4 - 3 - 2
  • Output Power(RMS) @ 14.4 VDC, THD 1%
    • 4 Ch 150 W x 4 (4Ohm)
    • 4 Ch 250 W x 4 (2Ohm)
    • 3 Ch 150 W x 2 (4Ohm) + 500 W x 1 (4Ohm)
    • 3 Ch 250 W x 2 (2Ohm) + 500 W x 1 (4Ohm)
    • 2 Ch 500 W x 2 (4Ohm)
  • Distortion - THD (100 Hz@ 4Ohm): 0,08%
  • S/N Ratio (A Weighted@ 1V: 100 dB
  • Damping Factor (100 Hz @ 4Ohm): 50

Approximate Dimensions:

  • Unit: 6.73" x 11.18" 1.83"

Approximate Weight:

  • Shipping: 10 lbs
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Key Features
Up To 1000W On 2 Channels At 4 Ohm/ Thermally Optimized Double Extruded Heatsink/ Ergonomic And Aluminium Die-Cast End Caps/ Full Range Pre-Out/ Automatic Remote Turn-On/Off Function/ 4 LEDs Monitor The Status Of The Amplifier/ Black Finish
More reasons to buy the Hertz HDP 4 from Abt Electronics
  • Abt.com is an authorized dealer (Learn More).
  • The Hertz HDP 4 is Brand New.
  • The Hertz HDP 4 Ships in a Factory Sealed Box.
  • Abt ships this product for free!
Number of Channels4-Channel
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