So what happened to the reviews ?
Well... I've only had it for one full day. Needed some time with it to form an impression of it. Still in the process of doing so, but I can make a couple comments here. The R5 Gen 2 is a bit of a puzzler to me. I'll explain.
Almost all of my listening has been done with Moondrop's Kato and the 7Hz Timeless, both fitted with balanced cables terminated in 4.4mm Pentaconn connectors. Nearly all the time, I've had the Class A mode activated.
I can't really fault it's sound much. Everything sounds clear, detailed and balanced. What puzzles me is, when you switch from Class A to Economy mode, there really isn't any difference in sound. Okay, maybe Class A sounds ever so slightly smoother with ever so slightly improved soundstage and layering... maybe. Other than that, the two modes sound pretty much identical.
Which makes me ask the question, "If you're going to bother to develop a discrete Class A amplifier circuit to fit into a DAP, shouldn't there be an audible improvement in sound from the on-board amp of the ESS DAC?" I'm having a hard time seeing the point here.
Don't get me wrong. It's a really nice device. Feels good in the hand, looks great, the fact that it runs on Android adds the convenience of being able to stream over wifi with your favorite streaming app... It has a really nice feature set, but I just don't get it.
To me, the feature selling point is the claimed 35 hour battery life in Economy mode. If you're buying this DAP because you're hoping some kind of Class A magic will happen when you switch to that mode then you may be disappointed.
I did try my HD600's just to see what would happen. I don't have a balanced cable for those, so I was only able to use the single-ended 3.5mm output. There's just not enough juice here to run the Senns. They sound pretty thin. Even in Class A mode, the R5 Gen 2 can only muster 155mW of power into 32 ohms. That doesn't bode well for the 300 ohm Sennheisers. Probably wouldn't be a whole lot better using the balanced out, but someone else can comment on that.
One more thing... well two. The first time I loaded the player with some music from my 256GB card, the R5G2 sputtered and stopped and started on a FLAC file I've played hundreds of times on other players with no issue. I tried another track in another folder to see if it was just a problem with the first file. It stuttered and sputtered and stopped and started too. Then I shut down the R5G2 and restarted. When I played the tracks again, there was no problem and it hasn't happened again since. Also, the first time I tried using the R5G2 as a bluetooth receiver to stream Spotify from my phone over LDAC I got lots of static and digital noise when I hit play. It gradually cleared itself up over the course of 20 to 30 seconds and, like the first problem, hasn't happened since. Not sure what any of that was about.
So I'm going to play around with it a while longer and see if it grows on me. I like the convenience and features that Android brings with it and I love the battery life in Economy mode. But as far as I can tell, the only thing the Class A mode does for this DAP is drastically reduce its run time on a single charge.
It'll be interesting to hear what you all have to say.