Ultimate Ears Triple fi 10 Pro

This review has been thought using the Shure black foam tips. in other words, the Triple Fi have been enjoyed with a perfect seal.

At first I tried the silicon tips that came with the Triples. I didn't like normal tips, I was losing seal on my right ear every time. I switched to biflanges, which were better, but again, seal was being lost too often. Then I modded a pair of shure black foamies (cut them from their tube), and superglued them to the tubes of a pair of UE foam tips: perfect seal!

These are my sonic impressions (out of my JVC, a very good player, I think its nice built in amp was previously a part of JVC's MiniDisc line). Bass is lovely. Not "horizontal" (always present, like the shure e500 or the denon ah-c700), but "vertical", impactful. Drums are very pleasant to hear.
While Etys present bass in a way you hear it when it's there, the Triple Fi make you FEEL the bass. It's thunderous when it's there: deep, strong, but still very polite, clean. Never out of place.

Looking at Headroom's frequency graphs, it's easy to tell the Etys are deeper. What I can say is it may be true, but their deep bass is almost inaudible, as well as the rest of the bass.
Bass on the triple fi is deeper than what I used to obtain from equalized Etys and equalized Altec Lansing.
The midrange is not sucked out like some people said.
Maybe it's because I have the seal, but I don't think vocals sound sucked out at all. They are flat, detailed, not forward, not recessed.
Not insanely forward like the d-jays, not sweetly forward as the modded iM716, not as full sounding as the denon c700, not as poor/recessed as Atrios. More ety like. Unlike Etys, tho, midrange isn't the main character here: that role belongs to the bass and the highs.
Highs are more pleasant than using the Etys, never sibilant, and more forward than what I thought the Altec iM716 gave.
My impression is the midrange is the body of the song, it's honest, fast and detailed. It produces better vocals than the Shure E500 (where they sound syntetic, artificial... at the time I had them I used to say "vocals on the E500 sound like they are coming out of a subwoofer"). From this midrange, bass and treble raise and sound sweet, the former powerful and analogue/real, the latter just magical.
Soundstage is wide, probably wider than ER4P/E500 out of my JVC player. Its limit is the space of three heads, if it makes sense. Instrument placement (one of Etys strenghts, on of Atrios main weak points) is top notch and made me remember why people talk about "vertical soundstage" with the Triples. Soundstage has also some depth, but nothing insane. All the "head-space" is filled.

Bass and soundstage together give a real feeling of a full size headphone. What I mean is the bass sounds like it's coming from something big. I had this feeling only when I listened to my Koss A250, and it was what I loved most of those cans. Never experienced the same with any IEM.

They don't sound anemic at all, and are full of energy. Bass and treble energy. Since it was one of my main concerns when I decided to buy the Triples, I'll repeat it: vocals don't sound recessed. They are very present and detailed, and the singer isn't part of the background. He's The Singer, he's one of the most important "instruments" in the song. Tim Buckley's "Lorca" and "Starsailor" are simply awesome, his voice reaches peaks of sweetness and crazyness, his abilty to change and distort is followed by the Triple fi.

The Triples are very fun... meaning not a funny freqency response, which is actually very balanced. Enjoyable and not analytical.
Classical (Shostakovich, the 15th Symphony) with the Triple Fi is a religious experience, as well as Robert Wyatt's "End of an ear" and "Rock bottom". These are some of my favourite albums.

Update - Drawbacks

I've had a lot of problems with fit. By fit, I don't mean "reaching a good seal", but rather the way I can wear the Triple fi without discomfort. The cable is so stiff it's always in the way. It's impossible to move without having the cable pulling, or hitting against your face. It's so uncomfortable it spoils the listening experience and is very distracting.
I find it to be a real problem.
There is a solution, discovered ad HeadphoneHaven.com. It's possible to replace the stock cable (which is disposable) with a Westone ES2 cable. It improves comfort by a lot, since the cable disappears when the IEM is worn. The pins on the ES2 cable are longer than stock pins, but some shops (like Jaben) can trim them in order to fit the junction tightly and without them being left uncovered.

Sound rating: A (best universal IEM)