The Prime R500X1D is a 500 watt mono amplifier using efficient Class-D circuit topology. This amplifier is capable of running a 2-Ohm load and includes on-board Punch Bass and remote Punch Level Control. Rockford Fosgate performance in a small package - this Prime Series R500X1D mono amp can drive a sub with up to 500 watts RMS, so you can really feel your bass rockin". You can use the low-pass filter and Rockford Fosgate"s famous Punch boost to get the best possible bass from the sub and enclosure in your vehicle. A phase switch gets your subs firing along with your other speakers for maximum impact, while the speaker-level inputs let you hook this amp up to almost any system, even a factory stereo.Remote PLC (Punch Level Control) 0 /180 Phase Switch Real time output and power supply thermal sensing Cast aluminum heatsink 4 Gauge power/ground connectors MOSFET power supply Over current protection Short circuit protection Muted turn on 1 Year Standard Warranty