Pyle PLMRA410BT Bluetooth 400 Watt 4 Channel Waterproof Marine Boat Amplifier

Engineered as a 4-channel bridgeable marine amplifier that powers up your speakers and has a bridge mode selection switch as well as a high or low electronic crossover network 2.1 bluetooth connectivity that has a wireless range of 25 plus feet and has a smart auto connect that remembers device pairing info Waterproof with its marine-grade rating of IP 01 and constructed with silver-plated stereo speaker terminal connectors to combat weather corrosion with long term use Built with a heavy-duty aluminum alloy heatsink, thermal overload speaker short protection, and LED light indicator to protect the amp and your vehicle's electrical system from short circuit conditions Powerful with its 400-watt MAX and dual MOSFET power supply this waterproof amplifier comes with dual adjustable gain level controls Max power: 100 watts x 4 channels Amplifier class: AB Bluetooth version: 2.1 Bluetooth wireless range: 25-Feet Fuse type: 20-amp Input gain impedance adjustment: 1 to 300mV Frequency response: 15Hz to 30kHz +/ 3dB Input impedance: 10k ohms (Low), 100-ohm (High) Input sensitivity: 250mV (Low), 2.5V (High) T.H.D.: <0.04% S/N ratio: 95dB Power supply: DC 12-volt Matching speaker impedance: 4 to 8 ohms Color: White Dimensions (L x W x H): 8.0 x 7.9 x 2 inches Weight: 4.13 pounds Manufacturer warranty: 1-year warranty