Wet Sounds Sinister-SDX4 1370W 4-Channel Full-Range Class-D Marine & Powersports Amplifier

The Wet Sounds Sinister-SDX4 4-Channel Full-Range Class-D Marine Amplifier (MPN: Sinister-SDX4 | UPC: 814820024623) brings competition-grade multi-channel output to luxury wake boats, center-console yachts, and extreme powersports builds—delivering up to 1,370 watts of continuous RMS power from a single 14.5-inch cast-aluminum footprint.

Powered by Wet Sounds' exclusive MAXED™ Class-D Power Supply, the Sinister-SDX4 outputs 185W x 4 RMS @ 4Ω, 340W x 4 RMS @ 2Ω, or a staggering 685W x 2 RMS bridged @ 4Ω (the benchmark configuration for driving a pair of REV 10 or REV 12 HD wake tower speakers to full potential) while maintaining rock-solid thermal stability and crystal-clear 8Hz–35kHz fidelity.

Key Features & Engineering Highlights

• 685W x 2 Bridged @ 4Ω Benchmark Tower Output: Bridges cleanly to unleash maximum dynamic range on high-power HLCD tower pods, or runs up to 8 REVO 8-inch in-boat speakers at 2Ω stereo.
• MAXED™ Class-D High-Efficiency Supply: Minimizes battery amperage draw and heat buildup during all-day sandbar and cove sessions.
• Marine-Sealed Cast Aluminum Construction: Conformal-coated PCB, sealed top-panel tuning cover, microprocessor fault protection, and backlit LED badge.
• Removable Plugs & Remote Control Included: Quick-disconnect power/speaker terminals simplify winterization and service; includes dash remote level control.

Technical Specifications

Why Buy Your Wet Sounds Amplifier From TDS Car Audio?

Authorized Wet Sounds Dealer + Marine, Powersports & Harley-Davidson Audio Specialists in Toledo, OH: Wet Sounds voids all manufacturer warranties on amplifiers sold through unauthorized websites or marketplace resellers. When you order from TDS Car Audio, you get a factory-sealed, genuine Wet Sounds amplifier backed by the full 2-Year Wet Sounds Limited Warranty plus Free Fast Shipping on orders $199.99+. Whether you are powering wakeboard tower HLCDs, multi-subwoofer marine cabins, side-by-side UTV roofs, Jeep Wranglers, or tight Harley-Davidson bagger fairings and saddlebags, our installation team sets gains and crossovers on Wet Sounds amplifiers every week at our Central Ave facility in Toledo, Ohio—call us at (419) 376-6140 for expert system matching before you buy.

WARNING: This product can expose you to chemicals including lead and DEHP, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.