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The Wet Sounds Sinister-SDX4 4 Channel Marine Amplifier is engineered for high-efficiency, high-output performance in marine and powersports audio systems. Built with Wet Sounds exclusive Class D architecture and MAXED power supply technology, the SDX4 delivers strong, clean power while minimizing strain on the electrical system.
Designed for versatile system integration, the SDX4 provides flexible 4-channel output for full-range speaker systems or multi-zone audio configurations. Its high-efficiency design reduces current draw and heat generation, supporting longer play time and consistent performance in demanding environments.
The amplifier features a full cast aluminum chassis shared across the Sinister Series, ensuring consistent sizing across models for simplified installation and a clean, uniform system layout. Internal layered PCB construction and advanced microprocessor control provide stable performance and system protection under load.
The SDX4 includes remote level control, removable speaker plugs, and high-level speaker inputs for flexible installation and tuning. A backlit LED badge adds a refined visual detail for custom marine installations.
Built for harsh marine environments, the Sinister-SDX4 is backed by a Wet Sounds 2-year limited warranty and designed for reliable multi-channel system performance.
Features
- Wet Sounds exclusive Class D power supply architecture
- MAXED high-efficiency power supply technology
- 4-channel high-output marine amplifier design
- Reduced current draw and heat for improved efficiency
- Full cast aluminum chassis shared across Sinister Series
- Layered PCB and advanced microprocessor control
- Remote level control included
- High-level inputs and removable speaker plugs
- LED-illuminated badge design
- Marine-grade construction for harsh environments
- 2-year limited warranty
Applications
- Marine full-range speaker systems
- Powersports vehicles (UTV, ATV, SxS)
- Motorcycle audio systems
- Jeep and off-road audio builds
- Golf cart audio systems
- Custom marine and outdoor audio installations
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
What This Warranty Covers
This is a “limited” warranty. This warranty covers any defects in materials and workmanship. This warranty applies only to the original purchaser and is not transferable. This warranty is valid only if the original purchase was made from an authorized Wet Sounds dealer.
How Long Coverage Lasts
This warranty lasts for 2 years from the date of purchase. It is recommended to document your product serial number and retain your receipt. These documents are required to verify your warranty coverage and expiration.
What Is Not Covered
This warranty does not cover fading or discoloration caused by exposure to sunlight or chemicals such as ammonia, household bleach, or any cleaning materials that contain abrasive substances. Wet Sounds, Inc. does not cover expenses for removal or reinstallation. Additionally, shipping to Wet Sounds, Inc. must be paid by the purchaser.
This warranty is void and inapplicable if Wet Sounds determines that the product has been abused or misused, including but not limited to damage caused by accident, mishandling, improper installation, removal of the inline fuse on the power connection, negligence, normal wear and tear, excessive water or heat damage, freight or shipping damage, or products that have been disassembled by anyone other than Wet Sounds technical staff.
Wet Sounds will not be responsible for any incidental or consequential damages, except to the extent provided or prohibited by applicable law. This warranty gives you specific rights, and you may also have other rights that vary from state to state.
What Wet Sounds, Inc. Will Do
Wet Sounds, Inc. will repair any part of your product that proves to be defective in materials or workmanship. If repair is not possible, Wet Sounds will replace the product. If deemed necessary, Wet Sounds, Inc. will replace the entire product with a refurbished unit, or with a model of similar value if the original model is no longer available.
Labor costs and materials required to complete this service will be provided at no charge to the purchaser. Additionally, return shipping from Wet Sounds, Inc. to the purchaser will be paid by Wet Sounds.
How To Get Service
Contact Wet Sounds, Inc. by phone at (877-938-7757) or by email at warranty@wetsounds.com. A service representative will confirm whether the issue is caused by a defective product and whether it is covered under warranty.
The service representative will issue a Return Merchandise Authorization (RMA) and provide additional details to obtain service for your product.
Do not return your product without a valid RMA
Internet Warning
Wet Sounds, Inc. products sold on non-authorized websites or internet auction sites are void of all manufacturer warranties. Please contact Wet Sounds at (877-938-7757) or visit www.wetsounds.com for a list of authorized online sellers or to locate an authorized installing retailer near you.
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