I can attest that I installed Indians audio upgrade fairing speakers to my Challenger this past weekend. In a word; WOW....what a HUGE difference in sound output and quality. It was a plug and play.....and the new speakers equalizers are synced to the bike. This was all of a 10 minute job. I knew they were expensive going in....but I had some gift cards to use and coupled with my IMRG dealer discount (20%), I got them for relatively short bucks! HUGE difference. Now when I can't ride, I go in my garage, turn the power button on and play my music through my bike. Hole Sheit. On number 3 volume setting, they practically blow your helmet off!!! Also for what it's worth, I installed the "pricey" garage door opener module for our bikes....and that, too, was a piece of cake. What a HUGE convenience. Hey, you know what they say....you want to play you need to pay. You can't take it with you.