Got 'em, love 'em. Apparently a rebranded Super.fi 5 (non-pro), these are fantastic IEMs in my opinion, not just for the price but are able to hold their own against IEM that cost several times as much from my experience. In particular, I find UE600 very similar, almost shockingly so, to Shure's SE535. We all know how much SE535 costs - with half a grand MSRP not many people can afford these. Well, I think UE released an SE535 alternative for a whole lot less dough without even realizing it with their UE600. I know graph aren't everything and all but they are the only objective evidence we have of sound quality, so they are pretty significant IMO, and UE600 measure really well. Their frequency response is almost identical to that of Shure SE535 and I think that frequency response curve is quite natural. I am a big fan of Shure SE530 and 535 sound and I adore these UEs as well. They have the same full, rich, enveloping sound with a seductive sweetness in the mids while maintaining a very natural tone that allows real instruments and vocals to shine through with a realism that I probably haven't heard with the majority of other IEMs, nor any but a small handful of full sized cans. Incredibly, the single balanced armature driver in the UE600 is able to deliver a soundstage and dynamics that can almost rival (if not up there with) 3+ driver BA setups. Actually, UE600 doesn't really try to wow the listener right away from my experience, so upon first listen it probably won't be obvious to most just how good they are. It wasn't obvious to me, until I listened for some time. In this respect, they are very much like the Shures - the sound is laid back and subtle, and requires you to pay attention to it before the magic of the presentation can grab you in return. The imaging and soundstage of UE600 is also surprisingly close to that of the Shures and can make me feel like I am listening to good full sized cans quite often. They have an excellent soundstage height and very impressive depth as well. Detail resolution is generally in the ballpark with SE535, except maybe lacking just a bit in the upper treble and details are very nicely integrated into the sound without unnatural hyper detailing of something like DBA-02 or, to a lesser extent, the Etymotic ER4, both of which achieve much of their perceived detail simply by boosting the treble and/or upper mids. Imaging is sharp and well defined which is also clear from the square wave response which is amazingly clean looking for a $100 product. The 300 hz square wave response, in particular, has very few artefacts and looks really nice which from my understanding indicates a black background, which I am definitely hearing. This basically means that the headphone is very accurate - it hardly adds anything to the sound that comes from its own character/coloration, but mostly reproduces what's there on the source and recording. I heard very few headphones that can achieve this. For comparison, here are the measurements for UE700, which is the more expensive dual driver TWFK based bigger brother of the UE600. As you can see from that graph, while UE700 still measures reasonably well, but not as well as UE600. Actually, the impulse response for UE700 looks pretty mediocre to me. If you then scan through other headphone measurements on that site as well as on headroom, you will see that there are actually very few headphones that can match or surpass the square wave response of the UE600. I am not trying to say that UE600 is one of the best headphones out there simply based on graphs, but considering that I am also hearing them as one of the best I ever tried I think that may say something.
But anyway, enough of the ramble and let's get back on track here and let's appreciate Ultimate Ears 600! Those of you who have this IEM and like the sound, this is the thread to share your impressions with other UE600 lovers like myself. Cheers.