Yay! finally got the M3, here's my review.
Recently I started looking around for an "ultra portable" music setup to use primarily for when I go cycling. I was looking at geeing one of the Sansa Clips (it's the first one that came to mind, and I was curious to try Rockboxing it), and had completely forgotten about the M3. Actually, I can't remember how I stumbled upon the M3 again, but I'm really glad I did. I became a big Fiio fan ever since I got my first Fiio product, the E6. After that I progressed to the X5, which I later on paired up with an E12. I eventually sold that setup in favour of an E18+E12A setup to use with my phone (which is still my main portable rig). Unfortunately the Fiio distributor in the UAE had decided not to import the M3, and I searched all over the net for anyone else here that had it in stock, but to no avail. Eventually I had to order it from Amazon.com on the 14th of June, and today (a week later) I finally got my hands on it.
First Impressions & Design
Holy damn this thing is tiny, not exactly iPod Shuffle tiny, but tiny nonetheless. I think the closest "high end" competitor ,in terms of the design, to the M3 would be the iPod Nano. The Nano is roughly the same length and width as the M3, but almost half the thickness (5.4mm vs 9.1mm), and the Nano also weighs a bit less (31g vs 40g). The weird thing about the M3, however, is that it actually feels quite solid. So much so, that it almost "feels" heavier than what my brain expected 40g to feel like.
he Nano has double the storage capacity, lnger battery life, and a bigger screen, but both have roughly the same pixel density (albeit the Nano has a touch screen). The Nano does have a better quality screen though, as the M3's screen isn't exactly very nice to look at it, and pretty much useless in sunlight. This doesn't really bother me too much though, as I specifically got the M3 for when I go cycling, so the vast majority of the time the M3 is being used, I won't be looking at it anyways. The Nano is also better put together, but that's partly why the Nano costs nearly 2 TO 3 TIMES as much as the M3 ($105-149.99 vs $55). Speaking of how it's put together, something that really annoys me about the M3 (at least the one I received) is that the screen isn't straight and centred. You can actually see (rather easily) that the screen isn't in the centre, and that is sits at an ever so slight angle. The USB port too isn't quite straight. C'mon Fiio, better QC, please.
So on paper, yes, the Nano seems to be a better device (not taking price into account), and in some cases it is; but the M3 offers you something the Nano simply couldn't....FREEDOM. With any Apple device, you're locked down to the Apple system, but with the M3 you don't need to install an app on your PC to copy over music files to the DAP. And speaking of files, the M3 supports more formats than the Nano, namely FLAC.
The other thing I'm not so sure of is the glossy button panel. That thing is such a fingerprint magnet, and I feel it might have been better if this had a matte finish instead....but that's minor.
I guess my only real complaint in terms of the design itself is the screen and Fiio's QC; the rest of it I can easily accept due to the price of the unit.
Portability
There isn't much to say here to be honest. As I mentioned, this thing is tiny, and about as portable as it's gonna get. What I particularly like is the fact that it fits so nicely in the case along with my MEE M6 Pros (see pics at the end). I suppose the other thing to note would be the battery life. Fiio says it'll last for 24 hours...which for me is great, as it means that I wouldn't have to charge it more than perhaps 3 times a month.
User Interface
Oh dear. The UI is something that has always bugged me about Fiio's products. I have never used any of their devices and though to myself, "oh yeah, this is well thought-out and intuitive UI design". I do like the fact that Fiio will (apparently) offer a number of themes for the device, but as it stands right now Theme 1 is the only usable one in my opinion. The firmware version that my M3 came with is the latest version (1.7) which also has a 2nd theme. But I find this theme to be almost totally unusable (in comparison to Theme 1) due to the red text on the blue background on the Now Playing screen and some other menus. Actually, now that I think about it, Theme 2 has a bit of a Windows XP feel to it.
Pairing
The only headphones I'll be using with the M3 is the M6 Pro, and I'm happy to report that it makes for a wonderful listening experience. The M6 Pro has a very slight v-curve signature, but due to the rolloffs in the FR of the M3 you get a fairly balanced sound coming out of the M6 Pros. I can hear a little bit of hiss when music isn't playing, but really nothing worth protesting about.
Sound
This is definitely the saving grace for the M3. I've read and watched a number of reviews, but the M3's sound still surprised me. For such a tiny, inexpensive device, the sound is certainly better than what I expected. But heck, this is Fiio, they always do the most important thing well...not always brilliant, but never terrible or even mediocre. What I did find quite interesting is that the M3 sounded better, more balanced and detailed than my LG G3. It's obviously not as good as my E18+E12A setup, but I'm totally ok with that. Remember, I'm going to be using the M3 almost exclusively when I go cycling...hardly a critical listening session. So for my use, I honestly don't have a single complaint about the sound; for me it's perfect.
Accessories
The M3 does come with 2 extra screen protectors (one already installed) which I quite like. Also included is a grey linyard and some earbuds. I don't particularly care for the linyard or earbuds, so don't really have anything to say about those. I did, however, also order the armband at the same time, and I quite like it. There's nothing fancy about it, but it seems well constructed and fairly unobtrusive. Something I am unsure of, however, is how well the finish of the M3 will hold up from taking it in and out of the armband...but I guess only time will tell.
Conclusion
Overall the M3 is a device that holds fantastic value. Yes, I feel like Fiio compromised (and to some degree perhaps even overlooked) on a few things, but the portability and sonic performance totally makes up for. If you're in the market for an audio setup to use while doing exercise or pretty much any other kind of non-critical listening session, I highly recommend the M3. In fact, my entire "exercise setup" (DAP, armband, and headphones) comes to a grand total of $120, which to me is a superb bang-for-buck value setup.