There's another route to your destination. Buy a Bluetooth wireless speaker like the Charge 3 from JBL. This is an amplified speaker which delivers high fidelity at high volume, that's to say, it sounds awesome in the general vicinity of the area where it is placed. I use my Charge 3 with my iPhone or iPad, which are loaded with iTunes. I use these devices as network players to play my entire CD collection, thousands of songs. The iPad and iPhone also have the iHeart Radio app installed, so I can listen to my favorite radio stations too. Radio like this sounds better than when I retrieve it from my AM/FM tuner. At any rate, this method for enjoyment of music while outdoors is as convenient as it is mobile and seems to be the most satisfying means to enjoy music outdoors as I have experienced. Forget amps, RCA and or digital connections, just enjoy without any hassle or much expense.