DS18 Audio - FX 6-Channel Class D Car Amplifier with Marine Rating, 6 x 180W RMS at 4 Ohm - Black
Reviews coming soon
About this product
The FX6 is a 6-channel car amplifier from the DS18 FX series, built as a Class D design. It delivers 6 x 180 watts RMS at 4 ohms. Total harmonic distortion is rated at 0.19% with a signal-to-noise ratio of 80dB. A selectable LPF/HPF/FULL crossover covers 40Hz-2KHz, so you can send each channel only the frequencies it should reproduce. Bass boost is adjustable from 0~12dB centered between 50Hz. Marine-grade construction makes it suitable for boats, side-by-sides and powersports vehicles. Match the amplifier to the RMS rating of your speakers or subwoofers and set the gain to that rating for clean, reliable output.
Features
6 x 180W RMS 6-Channel Amplifier
Delivers 6 x 180 watts RMS at 4 ohms. Power scales as impedance drops, so check the rating at the impedance you plan to run before matching speakers.
Class D Car Amplifier Design
A Class D topology runs cooler and draws less current than a conventional amplifier at the same output, with rated efficiency of 79%. That means less strain on your electrical system and a smaller chassis for the same power.
Marine-Grade Amplifier
Marine-grade construction protects the amplifier from water, spray and humidity in open-air installs. Mount it where a standard car amplifier would not survive.
Adjustable Crossover and Bass Boost
Onboard tuning includes a selectable LPF/HPF/FULL crossover covering 40Hz-2KHz and bass boost adjustable from 0~12dB centered between 50Hz. Send each channel only the frequencies it should play and dial in the low end without adding an external processor.
Protection Circuitry and Cooling
Built with thermal, over-load, dc output and short circuit output protection, so the amplifier shuts itself down before a wiring fault, a short or overheating can damage it or your speakers. That is what keeps 6-channel amplifiers alive in daily-driven vehicles.
Specifications
- Amplifier ClassDNumber Of Channels6Bass BoostVariableBridgeableNo
Reviews
This product doesn't have any reviews yet.
Compare similar products

The FX6 is a 6-channel car amplifier from the DS18 FX series, built as a Class D design. It delivers 6 x 180 watts RMS at 4 ohms. Total harmonic distortion is rated at 0.19% with a signal-to-noise ratio of 80dB. A selectable LPF/HPF/FULL crossover covers 40Hz-2KHz, so you can send each channel only the frequencies it should reproduce. Bass boost is adjustable from 0~12dB centered between 50Hz. Marine-grade construction makes it suitable for boats, side-by-sides and powersports vehicles. Match the amplifier to the RMS rating of your speakers or subwoofers and set the gain to that rating for clean, reliable output.

This multi-channel car audio amplifier delivers powerful RMS output, low distortion, and a high signal-to-noise ratio, with bridgeable channels for flexible upgrades. Its fast-cooling aluminum body ensures clear, stable performance, fits a wide range of vehicles, and installs easily—ideal for daily drivers and audio enthusiasts alike.

With the RUX-KNOB.2, get full control over your Alpine amplifier, conveniently from inside the car. You can quickly and easily make bass adjustments on the fly!

Unleash the hidden potential of any sound system with the Alpine OPTIM6. The OPTIM6 6-channel processor was designed to complement any aftermarket sound system with existing external amplifiers or easily add an external amplifier to a factory or aftermarket sound system.
| Pros for DS18 Audio - FX 6-Channel Class D Car Amplifier with Marine Rating, 6 x 180W RMS at 4 Ohm - Black | |||
|---|---|---|---|
| There were no pros for this product— | There were no pros for this product— | Ease of Use, Bass Control | There were no pros for this product— |
Specs
Be the first to ask a question.
We’ll try to get your question answered within 24 hours by a Best Buy customer or brand representative.



















































