Hertz D-Class 4 Channel Amplifier 4x 125w (DP4400)

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.
Details
Hertz DIECI POWER amplifier DP 4.400
Key Features
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.
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.


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


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.


Dieci Power amplifiers are ultra-compact to ensure effortless installations in the increasingly narrow spaces of modern vehicles or the factory amp area.
More Information
Brand | Hertz |
---|---|
Total Max Power (Car Amplifiers) | 1000 Watts |
Product Labour Warranty | 1 Year Limited |
Product Parts Warranty | 1 Year Limited |
Width (in.) | 7.48 |
Height (in.) | 1.96 |
Depth (in.) | 13.19 |
Weight (lbs) | 6.35 |
What's Included

