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DSP Amplifier DSP4425

Model #: DSP4425

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Additional Parts May Be Required:
Additional parts or labor may be required to complete the installation depending on year make and model

Available In Store Only


Professional Installation Required

Built to order, Usually Ships in 2-4 Weeks

Special Order
Usually Ships in 2-4 Weeks

Financing Options here.

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4-channel Class A/B Amplifier Design, with 2-channel pre-amp outputs & Digital Signal Processing




Infinity DSP Amplifier is an audio processor for fine-tuning of aftermarket audio systems. It is a self-contained audio system with 4-channel audio inputs, 4-channel powered audio outputs, 2-channel pre-amp outputs, easy to use tuning interface and detailed tuning capabilities to satisfy any enthusiast. With a USB connection to access the tuning interface using a Windows PC, you can control fully variable crossovers, selectable 0-to-48dB slopes, time delay, 31-band parametric or graphic EQ adjustment, assignable input to output mixer with input channel summing, channel gain, master volume control, clipping indicator to ensure the audio output is not distorted and ability to save up to 10 presets.


Small footprint, All-in-One Class A/B Amplifier with DSP Control

Infinity DSP Amplifier has everything you need to create a professional sound quality audio system with the ability to mount your amplifier in tight spaces.

Everything You Need to Get Started

Infinity DSP Amplifier has everything you need to create an audio system, or expand your existing one, plus the ability to add more power by using it as a line driver when you are ready for your next power upgrade.

Simple Tuning Interface with Complex Features

Easy-to-use tuning interface anyone can understand, learn and control with enough horsepower to satisfy experienced installers. The Windows PC user interface includes variable crossover control, 0-to-48dB selectable slopes, 31-band parametric or graphic EQ adjustment, time delay in 0.2ms, output clipping indicator, assignable input to output mixer with input channel summing, output channel gain, master volume control, clipping indicator and ability to save up to 10 presets.

Versatile Connectivity

Balanced differential inputs to provide you with the best sound quality & noise rejection, and accepts RCA or speaker-level inputs so it will integrate into almost any system. Plus, all wire connections are conveniently labeled to make installation a cinch.

Convenient Bass Control

Wired remote control (sold separately) allows for quick adjustment of low frequency output with -30 to +6dB adjustment directly from the driver’s seat

Conformal Coated PCB

Your Infinity DSP Amplifier is engineered to withstand harsh conditions present in a wide variety of applications, using conformal coated circuit boards to ensure flawless power delivery, year after year.

Harman Standard Reliability Testing

Infinity is one of the greatest audio brands in the world. This is not a coincidence given the arduous testing and quality control. We take our craft seriously and want every consumer to have a world class experience that lasts and lasts.

Infinity Industrial Design

At Infinity, we take pride in our iconic design heritage. Our design team took great care to ensure that your Infinity DSP Amplifier will look amazing mounted wherever your music takes you. The smooth curve of the amplifier body, angular end cap design, and five-line staff with Infinity logo all tie together with our classic, current and future design language while concentrating on the design of your lifestyle.

Additional information


RMS Power Output @ 4Ω

25W x 4, <10% THD+N

Full-Range Pre-Amp Outputs


Selectable EQ adjustment

Parametric or Graphic

Signal-to-Noise Ratio

>80dB @ 4Ω

Fuse Rating


Operating voltage

What's in The Box

1 x DSP Amplifier, 1 x Wiring Harness, 1 x USB Tuning Cable, 1 x Mounting hardware, 1 x Spare fuse, 4 x Wire ties, 2 x Infinity sticker, 1 x Quick Start Guide

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