Bluetooth is a huge upgrade. i connect with my phone and tablet. My Alpine also came with a USB and Aux In on the front panel. My most unique feature is the RF remote, not IR. It also floatsJust your basic Sony . Biggest feature was that it had bluetooth.Old systems didnt have it, or even an Aux port , I wanted to be able to play Spotify and change music from the cockpit.
Only advice is it never hurts to ask questions before you just cut wires and go for it lol..there are a lot of smart people on here that know more than me and are very helpful.
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