Rockville PS40 4-Channel Bluetooth Micro Amplifier — IP65 Waterproof for ATV/UTV/Motorcycle

Compact, marine-rated four-channel amplifier designed for motorcycles, ATVs and UTVs. The Rockville PS40 features built-in wireless Bluetooth with auto-pairing so the amp can operate without a separate head unit. Engineered with Digital Class D audio topology and an IP65 waterproof rating, it uses waterproof silicone covers on inputs and the control panel, a conformal coated circuit board and anti-rust materials to withstand harsh outdoor environments. Dyno Certified RMS Power Ratings (Certified Dyno Test / Less than 1 % THD): 2 Ohms: 340 Watts (4 x 85 Watts); 4 Ohms: 200 Watts (4 x 50 Watts); 4 Ohm Bridged: 340w (2 x 170 Watts). Peak @ 2 Ohms: 1,350 Watts. Distortion (THD): ≤0.5%. Flexible crossover and tone controls: Independent crossover controls for CH1-2 and CH3-4 with Full Range / Low Pass / High Pass options. Selectable LPF / FULL / HPF with variable crossover frequency from 50Hz–250Hz. Includes a selectable 0 / 3 / 6dB bass equalizer. Inputs and connectivity: RCA low-level inputs plus high-level inputs with Auto ON functionality. Waterproof RCA input for reliable connections in wet conditions. Performance and electrical: Frequency Response: 20Hz–20KHz. Signal to Noise Ratio (1 Watt into 4 Ohms): ≥75dB. Input Sensitivity: 0.5V–15V. Stereo Separation: ≥45dB. Fuse Rating: 30A. High-Speed MOSFET power supply for stable delivery and a Status Mode LED indicator for operation feedback. Physical: Micro-size form factor fits tight installation spaces typical of motorcycles and off-road vehicles. Dimensions (Inches): 7.56" L x 3.66" W x 2.07" H.