Is there such a thing as a Portable Hi-Rez USB player that can be used in a car aux input?

I just bought a used Jeep Wrangler that has a CD player but has no USB input. It does have a aux input though.
Is there such a thing as a Portable Hi-Rez USB player that can be used in a car plugged into the aux input so that I can play Hi Rez music in the Jeep? Not via a phone but through a player itself.

ozzy