Boss Audio Rebel 1000 Watt 4 Speaker Bluetooth Sound System Features Two pairs of 3 full range speakers 1000 Watt max amplifier with wired remote volume control Bluetooth Audio Streaming - stream your favorite music or music service like Spotify or Pandora wirelessly One pair RCA inputs, 3.5 mm aux input Compatible with Audio Output of Smartphones and MP3 Players Frequency response 80Hz to 15KHz, SN 85dB, Thd: 0.01 Includes mounting brackets adjustable to fit 3/4 to 1-1/4 handlebars Note : Amplifier is black for all kits (black speaker kits and chrome speaker kits).