There's a whole cottage industry of Android powered digital music players. They usually skimp on things like screen quality and compute power, but add things like microSD slots, physical transport controls, and high quality DAC & amp hardware. It's gotten very competitive in recent years.
I sometimes look at these and daydream about owning one, then I slap myself and just put music on my phone. My hearing is just not that great these days, I doubt I could hear the difference.
