160w amp, HD Boom upgrade speakers, Hogtunes tweeters. Great sounds? Nope. The stock head unit on my 2008 FLTR has one bad radio - I mean bad as in not good. CDs are clear good sound. IPhone connected to AUX via a wire is very nice as well - Pandora, my own music in iTunes, ....
Two easily solved drawbacks to the wired AUX.
1. My iPhone's battery can be depleted. Only so much juice in it.
2. I prefer not to have a wire to AUX.
Long ago I installed a second 12 volt power outlet, aka cigarette lighter.
That power outlet is in my left glovebox. The plug will charge two USB powered devices.
Power to my iPhone is easily accommodated with a dual USB plug that inserts into the 12 volt power outlet. See the attached image.
The stock head unit is Bluetooth enabled via a BT receiver adapter inserted into the AUX. The BT receiver has an internal battery. The battery is charged when a mini USB cord is connected to the receiver, and the standard USB at the other end is inserted into a USB power port.
Both USB 12v power plug and BT receiver were purchased through "big river online retail." Items shown in attached image.
With the above setup I can go completely wireless, or if necessary charge both the iPhone and the BT receiver.
How is the sound? Like a CD! No reason for the expense or effort of a new head unit.