Alpine R2-A60F R-Series Hi-Res 4 Channel 600 Watt Class D Car Audio AmplifierAlpine R2 A60F R Series Hi Res 4 Channel 600 Watt Class D Car Audio Amplifier Experience the impressive power and exceptional performance of the Next Gen R Series R2 A60F 4 Channel Amplifier, now certified for Hi Res Audio Playback. The R2 A60F features a reduced footprint that's 15% smaller than the previous model (R A60F), making it easier than ever to install in most vehicle applications while still getting the same powerhouse performance. General