Hi, I have one, purchased new. Believe the unit is sound, and in the brief moments it has, sounds great for the price. I have a highly stable network, excellent equipment, and am technically versed. In all honesty, in nearly two months I have not had more than a couple days of listening, and am still corresponding with and waiting for technical support. Most of the time it has sat unusable. Specifically, the necessary phone interface repeatedly drops out, or the library disappears, has to be rescanned etc. or the settings cannot be accessed. Numerous updates were suggested by support and have not solved all thle issues. Asked for refund, they refused bc it was purchased elsewhere. Now, due to their prolonged support I am out of the return window, they want me to ship back to them for assessment, apparently at my own expense. Great sound, buggy, please look carefully at the reviews for the interface. I wanted to love, but clearly cannot recommend.