Sundown Audio

SDX400.1 : 400WX1 @1OHM AMPLIFIER

Name: SDX400.1 : 400WX1 @1OHM AMPLIFIER
Brand: Sundown Audio
SKU: S0FJ A-SDX400
Price: 195.36 USD
Availability: InStock

$195.36

SKU: S0FJ A-SDX400

In Stock

Ships by Jul 29

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Easy — 1–2 hours

Description

The Sundown Audio SDX-400.1 is a weatherproof Class D mono amplifier designed for car, UTV, or open-air vehicles. It delivers powerful bass with exceptional fidelity. The amplifier features a heavy cast aluminum heat sink for superior heat dissipation and protection from the elements. It also includes a removable audio control cover and a wired remote control for ease of use.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	Sundown Audio
Part Number	S0FJ A-SDX400

Videos

***It's So Cute!!!*** Sundown Audio SDX-400.1 Amp Dyno Test

Sundown Audio Prototype SDX-650.1 Amp Dyno Test

***Greatest Speaker Ever!*** Sundown Audio Vex Midrange Speaker

***Go Til It Blows!*** Amp Dyno Edition Sundown Audio SFB-600D

***Amp Test Week*** at Sundown Audio

Sundown Audio Midrange Speakers Listening Test Head-to-Head

Tiny Car Audio Amp Tested! Taramps DS160x2 Amp Dyno

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy