Hertz Dieci Power DP 4.400 - 4-Channel Amplifier

The Hertz Dieci Power DP 4.400 amplifier 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 50 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.

Universal compatibility is a key feature of the DP 4.400, offering an operating supply voltage ranging from 9 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 utilising 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.

Product Features

• High-Resolution Audio Certification: Hi-Res Audio certification featuring a frequency response of 10 Hz – 50 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.

Technical Specifications

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

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

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

Further Information

Hertz DP4.400 - User Manual (Online)