Mister Pig
Pigamus Maximus
Almost an unrelated issue. Most car parts are in a torturous environment that cannot compare to an item like a piece of home audio equipment. Unless the OP took his DAC out in the weather, drove 100 mph through snow and ice and the desert and on and on then the comparison is rather silly.
Actually the inside of an automobile is a pretty comfy place for electronics. They also perform far simpler tasks than a piece of audio gear, and are designed for that task. I never drove my F150 at a 100 MPH through snow and ice, or baja'd it like you suggest...but electronics failed anyways. And the quality of replacement parts were tied to cost. The cheaper ones being poorly built. I leaned that lesson the hard way on a Saab 9000 that was my work car. I wanted to buy an inexpensive water pump, but the cheap ones leaked in short order. I finally had to put a $300 one on there to get the car to be reliable. More times than not, you get what you pay for.
Regards
Mister Pig