Alpine R2-A150M Motorcycle Audio Accessories Automatic turn-on capability (via signal

Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment

5 dB @ 1 W / 1 m System Nominal Impedance 4 ohms System Frequency Response 38 Hz - 20 KHz ± 3 dB

RJ-14: Lets you connect an optional Alpine controller or media player (both sold separately)

Apple CarPlay and Android Auto compatible (requires wired connection)

Alpine R2-A150M Motorcycle Audio Accessories Automatic turn-on capability (via signalExtra loud, realistic bass If you like your music loud and clear, Alpine's R Series R2 A150M amplifier is for you. It cleanly reproduces the bass in your music so you can enjoy the enhanced realism you want, even when you're playing high res music. Alpine has built some of its top of the line amplifier technology into this R2 Series amp, including high efficiency transformers, premium low noise custom capacitors, and low distortion dual "Sierra"