Price Match Guarantee MB Quart Reference RA1-710.5 700 Watt Five Channel Amplifier MB Quart Reference series five channel car audio amplifier featuring innovative sound quality and power technology to run four full range channel and a subwoofer channel. The RA1-710.5 is a 700 watt 1 ohm stable (channel 5 only) car audio amplifier. Reference amplifiers feature DC Sensing to allow any amplifier to be easy integrated into an OEM system by simply adapting a RCA cable from the source unit. Bass remote is included. Product Highlights: Class D MOSFET 5 Channel Amplifier Peak Power: 1x350 @ 1 Ohm (Sub Ch. Only), 4x100 + 1x150 @ 2 Ohms, 4x50 + 1x150 @ 4 Ohms Frequency Response: 10Hz-250Hz, Built in bass control with 0-12dB boost 4 AWG Power and 12 AWG Speaker Terminal Wire Gauges Stable at 1 ohm (Sub Ch. Only) Remote Subwoofer Level Control Included Our 30-day money back guarantee