Now, with built-in Bluetooth (microphone included), answer calls and get Bluetooth streaming music from your Bluetooth capable phone or Bluetooth compatible device. A solid 300-watt peak power should be all the juice you need, yet the USA-740 has Hi 4 volt, 4 channel RCA Pre-outs and a Subwoofer RCA pre-out for additional amplifiers. The USB input allows you to plug in a USB flash drive (thumb drive) for playback of MP3/WMA/FLAC/WAV song files. A front mini jack auxiliary audio input and a rear RCA auxiliary audio input provide versatility for options like satellite radio, I-pod or any portable player you wish to use. Match the dominant color of your instrument cluster with the multiple LCD colors and LCD dimmer control. The AM/FM RDS tuner shows station, song and artist on the LCD display. For those of us committed to music collections on compact disc, the USA-740 fully controls our optional CD-1 CD player. Classic style with today’s sound and performance taking every road and curve with you in your vintage vehicle with built in Bluetooth.