Alpine UTE-73BT Single Din Receiver + R2-A60F R-Series 4 Channel AmpliferAlpine UTE 73BT Single Din Mech Less Receiver + R2 A60F R Series 4 Channel Amplifer Alpine 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