Hertz HDP 4, 4-Channel 1000W RMS D-Class Amplifier SKU: HDP4


Hertz HDP 4

Maximum Power, Maximum Quality, Minimum Size
Hertz Digital Power project delivers high power levels while maintaining high
efficiency, in a compact footprint chassis size required in today’s modern


  • RMS Power Output @ 4 ohms: 150 W x 4
  • RMS Power Output @ 2 ohms: 250 W x 4
  • RMS Power Output @ 4 Ohms Bridged: 500 W x 2
  • Frequency Response (+/- 3dB): 5 - 55,000Hz
  • S/N Ratio: 100dB
  • THD: 0.08%
  • Damping Factor: 50
  • Input Sensitivity: 0.3-5V
  • A Ch Filters: Full/Hi-Pass/Lo-Pass 50 ÷ 5k Hz (2 range) @ 12 dB/Octave
  • B Ch Filters: Full/Hi-Pass/Lo-Pass 80 ÷ 3.3k Hz @ 12 dB/Octave
  • Dimensions: 6.73” x 11.18” x 1.83”
  • ART: Automatic Remote Turn-On/Off with Speaker Input
  • Fuse Rating: 2 x 40 A
  • Preouts: 1 pair, full range
  • Power supply: Low-ESR capacitors, output stage based on solid T220-5pin Power Mosfets


New, unused

Clearance Item Warranty
All items sold as a clearance special have a 90 day warranty only. Items can be exchanged or a full credit can be issued only if the item is not as described or pictured. No refunds on clearance items. Clearance items are not guaranteed to fit your specific bike. Most items in the clearance section have not been vetted for make and model fitment as our regular products are. Speakers are warranted against defects but are not warranted against burned voice coils. If you over power your speakers or fail to set them up properly, your warranty will be void. We have taken the time to carefully inspect, document, and disclose the condition of all clearance items for you. All items that are open box or are used will be disclosed in the product description. Please be sure to understand what you are buying before making your purchase. If you have any questions or need more details about any clearance item, please give us a call. 1(888)311-0016