The HD4000 is a Class H amplifier with 4000 W @ Bridge 4Ω power output in a 19’’/2U format, ideal for use in fixed installations. HD4000 incorporates the soft-start circuit with gradual volume increase, clip limiters and special protection features such as temperature control, overcurrent, DC output and anti-short circuit on the outputs.

The whole HD series is based on our proven High Dynamic Power technology, which means higher efficiency in the ratio of power output versus energy consumed.

Voltage Gain32 dB
Input Sensitivity1.88 V
Input Impedance
20 kΩ
Slew Rate+/-12 V/μs
Output Power (1 kHz – 0,1% THD) (1)

Stereo 8 Ω / 650 + 650 W
Stereo 4 Ω / 1200 + 1200 W
Stereo 2 Ω / 2100 + 2100 W (2)
Bridge 8 Ω / 2400 W
Bridge 4 Ω / 4200 W (2)
Average Current draw (3)

7 A @ 230 V AC
Frequency Response20 Hz – 20 kHz (0/-1 dB)
Damping Factor (1 kHz @ 8 Ω)350
Crosstalk65 dB
S/N Ratio (A-weighted)108 dB (A)
Mains220 – 240 V AC- 50/60 Hz
Dimensions (HxWxD)88 x 482 x 440 mm
21 kg

(1) Continuous burst tone 20 ms (0 dB) / 480 ms (-20 dB) in accordance with EIA RS-490 and IEC 60268-3(IHF A-202).

(2) Specifically designed for long term operation in bridge 4 Ω at full power.

(3) Driving the amplifier at 2 Ω channel / 4 Ω bridge at full power mode in poor ventilation conditions may cause a thermal overload protection. 2 Ω power is time limited by mains circuit breaker.

Data Sheet


General user’s manual


Related Products


HD1200 Power Amplifiers


HD3200 Power Amplifiers


Processing Amplifiers TPD
  • 1x D-LINK DAP-2360 Wireless Access Point + support
  • 1x Access Point power supply
  • 1x Ethernet cable, ECRJ45-1200 with housing shield both ends
  • 2x Ethernet cable, ECRJ45-500 with housing shield both ends
  • 1x Neutrik cable extension (RJ-45 feedthrough)
  • 1x USB Pendrive – with DSP Studio software

Transport aluminium briefcase included