Pro's - great sound and storage capacity
Cons - The supporting software is no longer available from it's manufacturer, since it appears they stopped making the product in 2017. Other software entities have stepped in to replace the PonoMusic software, but I have yet to find a downloadable version for the device. Still looking...
Great packaging job, nice bamboo box. Cool looking player, drag and drop loading. Big 64 gb capacity, expandable to UUGEE with micro USB cards. Easy to use interface. Short battery life, a charge doesn't make it though a work day, that is my only real complaint.
I think this is the best portable digital audio player you can buy for the price. Note that I don't care about streaming or radio or the ability to access paid services - if you do then you might want to look at the Onkyo or the A&K, it's up to you.
I just copy my CDs to my computer and then copy them directly to the Pono - you don't need an app - Windows will recognize it as an external device.
The sound quality is excellent and the difference is clear to me. The higher the res you can get the better it sounds.
Last thing; I was thinking of buying a Bluesound device but decided against it because you need an app to control it and I want a device I can control directly, not from a phone!