Roswell R1 650.4 4-channel amplifier – marine Class-D audio

The R1 650.4 4-channel marine amplifier delivers efficient Class-D power and precise control for clear sound on board. With 100W RMS per channel into 4Ω and 2Ω stability up to 165W per channel, you can drive your in-boat speakers with confidence. Calibrated, switchable crossovers make tuning easy, while differential RCA inputs help reduce interference from sources such as LED lighting.

Key Features

• 4-channel Class-D design with high efficiency
• 100 W RMS per channel into 4 Ω
• 2 Ω stable up to 165 W per channel
• Bridgeable design for flexible configurations
• Calibrated crossover: FULL, HPF or LPF
• Differential, switchable RCA inputs minimize noise
• Conformal-coated PCBs and nickel-plated terminals
• Stackable, space-saving design with illuminated logo

Designed for reliable on-board audio

The R1 650.4 is designed for marine use, with marine-grade construction that can withstand challenging conditions. Its Class-D topology delivers clean, controlled power with minimal heat generation. Calibrated crossover settings allow you to quickly set your system to FULL, HPF, or LPF. Differential RCA inputs are designed to reduce interference and hum, so you can enjoy clear playback of your music on every trip.

Specifications

• Channel configuration: 4-channel, bridgeable
• Power (4 Ω): 100 W RMS per channel
• Power (2 Ω): 165 W per channel (stable)
• Amplifier type: Class-D
• Crossover: calibrated FULL / HPF / LPF
• Inputs: Switchable differential RCA, noise reduction
• Indicator: illuminated logo as nutritional status
• Printed circuit boards: conformal-coated
• Connections: Nickel-plated marine-grade wire terminals
• Design: stackable, space-saving
• MPN: 7920-1834

Why Choose Roswell

Roswell develops audio solutions tailored to life on board. The combination of marine-grade components, sophisticated connections, and efficient amplifier technology ensures reliable performance on the water. With a focus on durability and ease of use, Roswell provides a solid foundation for your marine audio.

Order now

Want powerful, clear sound on your boat with flexible tuning? Order the R1 650.4 today from Watersports4fun and benefit from fast delivery and expert service. Add it to your setup and experience the convenience of a bridgeable 4-channel amplifier with convenient crossover settings and low-noise inputs.

Whether you're looking for a boat amplifier for in-boat speakers, a multi-channel solution for your marine audio, or an efficient Class-D marine amplifier, the R1 650.4 offers control, power, and a clean installation thanks to its stackable design and durable finish.