DP 4.400 Ch: 4 - 3 - 2 | 1000 W

Hertz DIECI POWER amplifier DP 4.400 is an audio powerhouse designed to elevate your car audio experience to unprecedented heights. Boasting High-Resolution Audio Certification, this amplifier delivers an impressive frequency response of 10 Hz to 45 kHz, ensuring that every nuance of your music is faithfully reproduced with crystal-clear precision.

Despite its compact size, the DP 4.400 packs a punch with its maximum power output, featuring fully bridgeable 4-channel Class-AB amplification and 2Ω stability. This innovative design allows for a potent audio performance without sacrificing space, making it an ideal choice for those seeking uncompromised sound in a limited footprint.

The amplifier's aesthetics are as impressive as its performance. An elegant status LED, solid machined terminal block, and a removable top panel that safeguards controls and connections contribute to a sleek and sophisticated design that seamlessly integrates into any car interior.

Universal compatibility is a key feature of the DP 4.400, offering an operating supply voltage ranging from 6.5 to 16.5 V and speaker-in input sensitivity from 1.6 to 40 Vrms. The integrated Universal Speaker Simulator enhances versatility, ensuring optimal performance with a wide range of audio sources.

Experience high-noise rejection with the balanced input circuitry of the Pre-in and Speaker-in, allowing for clean and interference-free signal transmission. The full set of controls, including adjustable input levels, high/low-pass crossover filters (50-4000Hz 12dB/Oct.), and bass boost, provides users with the flexibility to fine-tune the audio to their preferences.

Convenience meets intelligence with the Automatic Remote Turn-On/Off feature, seamlessly triggered by OEM radio speaker outputs. This ensures hassle-free operation and an efficient power management system.

Whether utilizing Speaker-In or Pre-In level inputs, the DP 4.400 offers full-range pre-outs, providing further flexibility in system configuration. Elevate your car audio system with the Hertz DIECI POWER Amplifier DP 4.400 – where power, precision, and style converge for an unparalleled listening experience on the road.
General Specs
Channels 4 - 3 - 2
POWER SUPPLY
Nominal power supply voltage (fuse) 11 ÷ 15 VDC (2 x 25 A)
Operating power supply voltage 6.5 ÷ 16.5 VDC
Idling current 0.85 A
Standby current draw 10 uA
Consumption, MIN load impedance (Max Musical Power) 30 A
Remote IN 4 ÷ 15 VDC (1.5 mA)
ART - Automatic Remote Turn on/off from SPK-IN (BTL radio only) 1.5 VDC
Efficiency 60%
AMPLIFIER STAGE
Distortion - THD @ 100 Hz, 70% Rated Power 0.01%
Damping factor @ 1 kHz, 1W 130
Bandwidth @ -3 dB 10Hz ÷ 45kHz
S/N ratio (A-weighted @ 1 V Input) 101 dBA
Minimum load impedance
@ 4 Ch: 2 Ω
@ 3 Ch: 2 Ω + 2 Ω + 4 Ω
@ 2 Ch: 4 Ω
Adjustable Crossovers yes
Output Power
Output power (RMS) @ 1% THD:
4Ch @ 4Ω 75 W x 4
4Ch @ 2Ω 105 W x 4
3Ch @ 4Ω 75 W x 2 + 210 W x 1
3Ch @ 2Ω / 4Ω 105 W x 2 + 210 W x 1
2Ch @ 4Ω 210 W x 2
Output Power (RMS) @ 14.4 VDC, THD 10%:
4Ch @ 4Ω 90 W x 4
4Ch @ 2Ω 125 W x 4
3Ch @ 4Ω 90 W x 2 + 250 W x 1
3Ch @ 2Ω / 4Ω 125 W x 2 + 250 W x 1
2Ch @ 4Ω 250 W x 2
Total Power 1000 W
INPUTS / FILTERS
Inputs Pre-In / Speaker-In
Pre Out Full Range (Front)
Pre-In sensitivity 0.32 ÷ 8 VRMS
Speaker-In sensitivity 1.6 ÷ 40 VRMS
Front Ch Hi-Pass Full / 50-4000Hz 12dB/Oct.
Front Ch Lo-Pass Full / 50-4000Hz 12dB/Oct.
Rear Ch Hi-Pass Full / 50-4000Hz 12dB/Oct.
Rear Ch Lo-Pass Full / 50-4000Hz 12dB/Oct.
Bass Boost 50Hz 0 ÷ 9 dB
Physical Specs
DP 4.400
Dimension mm in
A 335 13.19
B 297 11.69
C 190 7.48
D 166 6.53
E 50 1.96
Weight Kg lbs
2.88 6.35
Features
DP 4.400
  • High-Resolution Audio Certification: Hi-Res Audio certification featuring a frequency response of 10 Hz – 45 kHz.
  • Maximum Power in Compact Size: fully bridgeable 4-channel Class-AB 2Ω stable power outputs in a small and compact design.
  • Attractive Design: elegant status LED, solid machined terminal block and removable top panel to protect controls and connections.
  • Universal Compatibility: operating supply voltage from 9 to 16.5 V and speaker-in input sensitivity from 1.6 to 40 Vrms with integrated Universal Speaker Simulator.
  • High-noise rejection: Pre-in and Speaker-in featuring balanced input circuitry.
  • Full set of controls: adjustable input levels, high/low-pass crossover filters (50-4000Hz 12dB/Oct.), and bass boost to fine-tune the sound according to your preferences.
  • Automatic Remote Turn-On/Off: driven by OEM radio speak
  • Full-Range pre-outs: available both when using Speaker-In and Pre-in level inputs.
Input/Output
DP 4.400 DP 4.400
Technologies
DP 4.400

Hi-Res Audio certification featuring a frequency response of 10 Hz – 45 kHz.

DP 4.400

Thanks to the built-in USS technology (Universal Speakers Simulator), DIECI POWER amplifiers can be correctly connected to head units with a “speaker load detection” function that monitors the presence of a low-impedance load to enable the audio outputs.

DP 4.400

Dieci Power amplifiers are ultra-compact to ensure effortless installations in the increasingly narrow spaces of modern vehicles or the factory amp area.