Prime 300 Watt 4-Channel Amplifier R2-300X4 Primed for Performance, the R2-300X4 is a 300 watt, full-range Class-D amplifier capable of operating at 4Ω or 2Ω stereo and 4Ω bridged/mono. This amplifier is extremely efficient because of its Class-D technology which reduces demand on the vehicles electrical system. The amp also features C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. supply that generates more power as voltage increases. The R2 models are developed for car audio fanatics that want a reliable amplifier – with all the power and performance you’ve come to expect from Rockford Fosgate – at an economical price. Rockford Fosgate amplifiers are renowned world-wide for being “under rated,” easily surpassing all specifications, and most importantly, generating more power than their ratings. These 3rd generation of Prime Series amplifiers are refined with the latest Rockford Fosgate technology for easy setup and configuration, making them perfect for use with factory audio or custom aftermarket systems. FEATURES AT A GLANCE High Level Input Capable 2/4 Channel Input Selection Switch Auto-Sense bypass switch for vehicles with RAP (Retained Accessory Power) Balanced Differential Inputs with RCA Pass Through Outputs Features C.L.E.A.N. Set-up Top Mounted Control Panel Short Circuit & Over Current Protection Fully Adjustable 12 dB/octave High and Low pass Butterworth Crossovers Full Range Class-D Cast aluminum heat sink CEA-2006 Compliant & CE Compliant 1 Year Warranty Front and Rear Variable Input Gain adjustment level SPECIFICATIONS Cta-2006 Compliant Remote Controls No Number of Channels 4 Visual Indicators POWER (Blue) / PROTECT (Red) C.L.E.A.N. IN (Red) C.L.E.A.N. OUT Front (Blue/Red) C.L.E.A.N. OUT Rear (Blue/Red) Total Power (Sum of Rated Power) 300 Watts PC5:D17ower Wire Gauge 4 AWG Rated Power (RMS Continuous Power) 50 Watts x 4 @ 4Ω 75 Watts x 4 @ 2Ω 150 Watts x 2 @ 4Ω Bridged/Mono Power Input Connector Compression Terminal Block Dynamic Power (PVC/PowerCube®) 70 Watts x 4 @ 4Ω 115 Watts x 4 @ 2Ω 230 Watts x 2 @ 4Ω Bridged/Mono Speaker Wire Gauge 8 AWG Bridgeable Yes Speaker Output Connector Compression Terminal Block Frequency Response 20 Hz - 20 kHz Cooling Convection Input Sensitivity Low-Level: 150 mV - 4 V High-Level: 450 mV - 12 Heatsink Circuit Topology Class Class-D Operating Voltage 9 - 16 VDC Efficiency (average) Recommended Fuse (not included) 60 A Total Harmonic Distortion (THD+Noise) 4Ω: