It took 3 weeks to arrive, it was very fast though. The product is awesome, I paired it with Fiio's FH3 and I'm totally blown away by the sound quality. Right now I'm blasting Incantation's last record and it's awesome how powerful it sounds. The R3's interface is easy to use and has a lot of interesting functions. it's not a cheap player but it is definitely worth it.
Way better than regular R3. Detailed, airy, nice bass and treble extension. What's interesting is the fact that it took 6days of continuous play for the device to open up. I was busy last week and I had time to check on it once or twice a day for a few minutes - it was playing using power bank and shuffle mode. R3Pro was a bit bright at the beginning, just a tad too sharp. After two days it was a bit dull, but the sharpness was gone (I've never seen that kind of burnin change before). After the 4th day it started to slowly open up and today it sounds on par or even - in some aspects - better than ES100 (and that is REAL compliment btw as Radsone SQ is better than M6, M9 and all BTRs - 3, 5 etc). I am already happy with the purchase, though I will leave it on for the next 24 hours as I won't have free time for a next day. RECOMMENDED!