With 300-Watts of peak power and increased versatility, the Kuryakyn RoadThunder Sound Bar Plus by MTX takes handlebar-mounted audio to a new level. An internal four-channel amp powers two 2 in. x 3 in. full-range speakers with dual voice coils. Four high-frequency, 1 in., silk dome tweeters create powerful, distortion-free sound at any volume level. Durable, 1P66-rated housings are weather-resistant, while built-in heat sink and a self-protection circuit combats excessive heat and over/under voltage regulation. An internal 3.0 Bluetooth receiver allows wireless connectivity to any Bluetooth-enabled smartphone or music device, and auxiliary input/output ports connect standard devices via a 3.5mm cable.