If you already have the Alpine system and want to upgrade read the following I posted on the ecodiesel forum:
First off, please know that I consider myself an audio/music enthusiast, not an audiophile. I do not work for Audioquest and they have given me nothing. I’m no expert and enjoy music much more for the music than the lyrics. I plugged in my Dragonfly Red DAC (digital to analog converter) between my iPhone 11 Pro Max and the Aux port inside the console box.
Sat in my truck in the garage so it would be very quiet for my test. I played about 20 songs in different genres but each for a specific reason. A few examples were John Mayer “Neon” live, George Michael/Elton John “Don’t let the Sun Go Down on Me”, Johnny Cash “Hurt”, Sam Smith “Writing’s on the Wall”, Brad Paisley & Carrie Underwood “Remind Me”, The Eagles “Take it Easy”, Five for Fighting “100 Years”, Lady Gaga “Your Song” from the Revamp album of Elton‘s hits, Larry Carlton “Smiles and Smiles to Go”, Journey “Faithfully” and “Lights”, plus a bunch more. For each song I first listened via Bluetooth for enough time to get a good feel for the song then started it over via aux (With the DAC). Each song was better with the DAC than without. Some were moderately better but most were phenomenally better. When I played Michael Jackson “Man in the Mirror” via the DAC I got a huge smile on my face. The difference between Bluetooth and the DAC was most evident in this song. Audioquest makes 3 different small, portable DACs. When I bought the Red it was the better of the two offered. Black being the lesser unit. They just released the “Cobalt” version. All are able to have the firmware updated for free via the Audioquest website. If you check out their website you’ll see that the Dragonfly product is primarily intended for headphone use. Obviously you must use plug-in headphones vs wireless. The Dragonfly Red makes my Sennheiser HD600 headphones come alive. I enjoyed the sound of my RAM Alpine system so much better with the Audioquest Dragonfly Red that I may upgrade to the Cobalt version. Prices are $100 for Black, $200 for Red, and $300 for Cobalt. Compared to swapping speakers or going deeper into the Alpine system to get better sound I feel a Dragonfly is the best bang for the buck. AND there is no installation required!