400W Smart Mini Car Sub Amplifier

Model: CAD400.1 smart car subwoofer amplifier
RMS power (Watts)@14.4V, 4 Ohm mono, ≤1% THD+N 180W x 1
@14.4V, 2 Ohm mono, ≤1% THD+N 400W x 1
@14.4V, 1 Ohm mono, ≤1% THD+N 400W x 1
Frequency Response (+/-3dB), 25Hz-200Hz
Signal-to-Noise Ratio [dB] >95, A-weighted, re: rated power
THD Distortion with 22K filter(Half 4 Ohm rated power): < 0.1%
Low Level Sensitivity: 200mV-4V
High Level sensitivity: 0.5V-10V
Electronic Crossover ariable Lo-pass 50Hz-200Hz,24dB/octave
Bass Boost Variable 0-12dB @ 45Hz
Subsonic Filter 25Hz, 24dB/octave
Remote Bass Yes (sold separately)
Lenght (in, cm) 7.5”/ 19cm
Heigt in cm] 2”/5cm
Width [in, cm] 4”/ 10cm
Availability:
Quantity:
  • CAD400.1 car subwoofer amplifier


Overview

The 400 watts smart car subwoofer amplifier CAD400.1 is a game-changer for car audio enthusiasts seeking powerful bass and compact design. As a leading mini car subwoofer amplifier, it delivers an impressive 400W RMS power at 2 Ohm and 1 Ohm, while its small footprint (7.5”×4”×2”) fits seamlessly in tight car spaces—no more sacrificing trunk room for great sound. Engineered with smart tuning features, low distortion, and wide compatibility, this car subwoofer amplifier is designed to upgrade any vehicle’s audio system, from sedans to SUVs and RVs. Whether you’re a casual listener craving deeper bass or a car audio hobbyist chasing theater-quality sound on the road, the CAD400.1 combines power, versatility, and convenience in one sleek package.


CAD400.1 car subwoofer amplifier


Core Specifications

Parameter

Specification

Model

CAD400.1

RMS Power (14.4V, ≤1% THD+N)

4 Ohm Mono: 180W × 1; 2 Ohm Mono: 400W × 1; 1 Ohm Mono: 400W × 1

Frequency Response (+/-3dB)

25Hz-200Hz

Signal-to-Noise Ratio

>95dB (A-weighted, re: rated power)

THD Distortion

<0.1% (with 22K filter, half 4 Ohm rated power)

Low Level Sensitivity

200mV-4V

High Level Sensitivity

0.5V-10V

Electronic Crossover

Variable Lo-pass 50Hz-200Hz, 24dB/octave

Bass Boost

Variable 0-12dB @ 45Hz

Subsonic Filter

25Hz, 24dB/octave

Remote Bass Control

Yes (sold separately)

Dimensions (L×W×H)

7.5”×4”×2” (19cm×10cm×5cm)


Key Benefits & Features

High-Power Output for Dynamic Bass

The 400 watts smart car subwoofer amplifier delivers 400W RMS at 2 Ohm and 1 Ohm, providing deep, punchy bass that elevates your favorite music—from hip-hop and EDM to rock and classical.

180W RMS at 4 Ohm ensures compatibility with a wide range of subwoofers, making it easy to pair with your existing setup or upgrade to a higher-performance sub.

Compact Mini Design for Space Efficiency

As a mini car subwoofer amplifier, it measures just 7.5”×4”×2” (19cm×10cm×5cm)—small enough to fit under seats, in glove boxes, or in tight trunk corners. No more bulky amplifiers taking up valuable cargo space.

Lightweight construction (not specified, but inferred from size) makes installation easy, even for DIY beginners.

Low Distortion & Crystal-Clear Sound

THD distortion <0.1% ensures pure, undistorted audio, so you hear bass exactly as it’s meant to be—tight, clear, and free of static or noise.

Signal-to-noise ratio >95dB (A-weighted) minimizes background noise, allowing you to enjoy crisp bass even at low volumes.

Smart Tuning Features for Customized Audio

Variable bass boost (0-12dB @ 45Hz) lets you adjust bass intensity to match your music taste and vehicle acoustics—crank it up for parties or dial it back for casual listening.

Variable lo-pass crossover (50Hz-200Hz, 24dB/octave) ensures seamless integration with your car’s speakers, preventing frequency overlap and optimizing sound balance.

Subsonic filter (25Hz, 24dB/octave) protects your subwoofer from damage by blocking harmful low-frequency signals that can cause distortion or overheating.

Wide Compatibility & Versatile Installation

Low level sensitivity (200mV-4V) and high level sensitivity (0.5V-10V) work with most car head units, whether you have a factory stereo or an aftermarket receiver.

Supports 4 Ohm, 2 Ohm, and 1 Ohm loads, giving you flexibility to choose the subwoofer that best fits your needs.

Durable Build for Automotive Environments

Engineered to withstand the harsh conditions of car interiors—temperature fluctuations, vibrations, and humidity—ensuring long-lasting performance.

High-quality electronic components prevent overheating and short circuits, adding an extra layer of reliability.


Application Scenarios

Sedan Car Audio Upgrades

Sedans often have limited trunk space, making the mini car subwoofer amplifier CAD400.1 the perfect choice. Install it under the seat or in the spare tire well to add powerful bass without sacrificing cargo room—ideal for daily commuters and urban drivers.

SUV & Crossover Bass Enhancements

SUVs and crossovers have more interior space but benefit from compact amplifiers to avoid cluttering the cabin. The CAD400.1’s 400W power pairs perfectly with larger subwoofers, delivering deep bass that fills the vehicle’s spacious interior—great for family road trips or off-road adventures.

RV & Camper Van Audio Systems

RVs and camper vans require compact, efficient audio equipment. This car subwoofer amplifier fits in small storage compartments, while its high power output enhances outdoor music sessions, campfire playlists, and in-van entertainment.

Custom Car Modification Projects

Car audio hobbyists and custom builders will appreciate the CAD400.1’s versatility. It integrates seamlessly with custom subwoofer enclosures and aftermarket head units, allowing for personalized setups that stand out at car shows or audio competitions.

Daily Commute & Road Trip Entertainment

Elevate your daily drive with richer bass and clearer sound. Whether you’re listening to podcasts, audiobooks, or your favorite playlist, the amplifier’s low distortion and high signal-to-noise ratio ensure an enjoyable audio experience—even during long road trips.


FAQ

Will the CAD400.1 400 watts smart car subwoofer amplifier fit in my small car?

Yes! With dimensions of 7.5”×4”×2” (19cm×10cm×5cm), this mini car subwoofer amplifier is designed for small spaces. It fits under most car seats, in glove boxes, or in trunk side compartments—perfect for sedans, hatchbacks, and compact cars.

Can I connect this amplifier to any car subwoofer?

The CAD400.1 works with most subwoofers rated for 4 Ohm, 2 Ohm, or 1 Ohm loads. We recommend pairing it with a subwoofer that matches the amplifier’s power output (180W-400W) for optimal performance and to avoid damage.

What is the benefit of the variable bass boost feature?

The variable bass boost (0-12dB @ 45Hz) lets you customize bass intensity based on your music genre and vehicle acoustics. For example, you can boost bass for hip-hop or EDM, or reduce it for classical music or podcasts—giving you full control over your audio experience.

Does this car amplifier require professional installation?

While professional installation is an option, the CAD400.1 is DIY-friendly. It comes with clear wiring instructions, and all necessary connections (GND, +12V, REM, INPUT) are labeled for easy setup. Basic knowledge of car audio wiring is helpful, but beginners can complete the installation with minimal tools.

How does the subsonic filter protect my subwoofer?

The subsonic filter (25Hz, 24dB/octave) blocks ultra-low-frequency signals that your subwoofer can’t reproduce effectively. These signals can cause distortion, overheating, or even permanent damage to the subwoofer—so the filter ensures only safe, audible frequencies reach the speaker.


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