Hertz DP 4.400
Dieci Power 4-channel car amplifier — 75 watts RMS x 4
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Hertz Deici Series 4-Channel 1000W Max Power Class A/B Car Audio Amplifier
The Hertz DIECI POWER DP 4.400 amplifier is built for those who demand precision, power, and premium sound quality in one compact package. As part of the renowned Hertz Deici Series, this High-Resolution Audio Certified amplifier delivers an impressive frequency response of 10 Hz to 45 kHz, ensuring every detail of your music is faithfully reproduced with clarity and depth. Its fully bridgeable 4-channel Class A/B design and 2Ω stability provide flexibility for various configurations, allowing you to power multiple speakers or bridge channels for greater output — all while maintaining remarkable audio fidelity.
Designed with practicality and intelligence in mind, the DP 4.400 features advanced balanced input circuitry on both Pre-in and Speaker-in connections, ensuring high rejection of electrical noise for a clean, interference-free listening experience. Users can fine-tune their sound with a full suite of adjustable controls, including input level settings, high/low-pass crossover filters (50–4000 Hz, 12 dB/Oct.), and bass boost options for enhanced low-end response. The Automatic Remote Turn-On/Off function provides seamless integration with OEM head units, activating effortlessly through speaker outputs for efficient power management and ease of use.
Compact, reliable, and engineered for excellence, the Hertz DIECI POWER DP 4.400 is the perfect upgrade for audiophiles seeking uncompromised sound performance and installation flexibility.
Key Features
– 4-Channel Class A/B amplifier with 1000W max power output
– High-Resolution Audio Certified for pristine, detailed sound
– Fully bridgeable design with stable 2Ω operation
– Wide frequency response: 10 Hz – 45 kHz for accurate audio reproduction
– Balanced input circuitry for high noise rejection and clean signal transfer
– Adjustable input levels for precise tuning
– High-/Low-pass crossover filters (50–4000 Hz, 12 dB/Oct.) for custom sound control
– Bass boost function for enhanced low-frequency performance
– Automatic Remote Turn-On/Off for seamless OEM system integration
– Compact, space-saving chassis ideal for versatile installations
– Includes (2) 25A fuses, (2) speaker input connectors, 4mm & 2mm hex keys, mounting screws, Quick Start Guide, and Warranty Card
What's Inside?
- 4-Channel amplifier
- (2) Speaker IN Connector
- (2) FUSE 25 AMPS
- HEX Key 4mm
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.