I ditched the Axxera pretty quickly. It would work for a few hours, then loose audio. I would yank it out and it might start working again, might not. Wiggling wires didn't seem to change anything. I suspect it was a cold solder joint somewhere in the unit, and it was more heat related than anything else.
I switched to an android based 10" floating screen double din head unit from Atoto. Way more than I wanted to spend, but I liked a lot of the features. My biggest issue with it was the low end intel processor that was used. It was not under powered for the features. It probably was over powered. I was more concerned about the heat and power usage. The ARM based units would be better power usage/heat wise, but there were some complaints on line that you could have too many things running and it would be slow or stutter.
Atoto is a China company, but great service if you are ok with detailed answers by email the next morning(seems almost guaranteed). They even have a way to upload your video to show them your problem. (Nice)
It solved my audio problem (proving it was not wiring).
The only feature you lose with these non-RV specific head units is the lack of a switch to keep the backup camera on constantly. I like to have this on, since I can not see our toad while we are driving.
Of course leaving the backup camera on 100% meant that you really weren't able to use any other feature of the radio.
My solution was a cheap 7in monitor that is always connected to the backup camera.
I like not having to hit any buttons to take a look. It is just always there.
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