Alternative to Jensen AV receiver?

If you're referring to the units found in Travel Trailers and 5th Wheels, I agree. Total junk. I don't know what they put in Class A's, B's and C's. If you do find something, plan on needing to modify the opening to have a decent fit and finish. You'll also need to plan on running new speaker wires because they use a common ground in RV's and the wiring is a mess to say the least. Where the grounds are located and whether they are all connected is a mystery. Likely within the rats nest of wires found hidden somewhere in your RV. So you'll have positive and negative sets of speaker wires at the back of the Jensen unit but by the time they reach the speakers you'll have something different. They might not even be the same color wires like in my RV. Somehow they work with the original POS Jensen but not all the speakers work with better units and I've tried three different units and I can't figure it out. A close friend of mine who is an electrical engineer can't figure it out either! I didn't want to run all new wiring through the walls and ceiling so I just gave up and use my phone and good bluetooth speakers for music. For DVD's and Television I put up with the lousy sound. Good luck to you!