Expansion Amplifier Part Number: ME-50 each ME-50 Expansion Amplifier. The ME-50 is a compact 2-channel 50-watt audio amplifier with separate volume control. This unit is designed for adding additional speakers to an existing system or as a separate Zone amp. Features Accepts line level or speaker level inputs Powers up to 4, 4 Ohm speakers Separate waterproof Volume control (10 ft lead) Use to add additional loudspeakers to a current audio system Use to provide amplification for a separate audio zone Use as a stand-alone system amplifier for any audio source Specifications Speaker Impedance: 2-8 ohm Output Power 2ohm load: 25W RMS/Channel Output Power 4ohm load: 15W RMS/Channel Frequency Response: 20Hz-20kHz Operating Voltage: 13.8V DC (10V-16V Idle Current (no signal): 10mA Maximum Current Draw (full power): 7 amps Remote Wire Current: 4mA Approximate Width: 4.15" Approximate Height: 1.5" Approximate Depth: 4.75" Weight: 15oz (.425Kg) Volume Control Cable Length: 114" (290cm)