Roswell's RMA 600.1 Amplifier is a mono-channel, super efficient Class D design. Complete marine grading highlights the quality of materials used to protect against harsh marine environments, including conformal-coated PCB boards and gold-plated RCA and wire terminals. The RMA 600.1 has an ideal compact size and delivers premium sound power and quality. Remote bass boost included. 10Hz-150Hz frequency response. 350 watts x 1 at 4 ohms; 600 watts x 1 at 2 ohms.