Pros: Sound Quality, Great for a Basshead & Treblehead, Great For Price That You Can Get Them For
Cons: Recessed Midrange, **DODGY CABLE**
I traded my beloved IE8s for these just less than a week ago. All of this is tested on my HDP-R10, Samsung Galaxy S3 and my Sansa Clip+.
Everything said in this review is how I hear and I am in no way affiliated with UE or against them.
Design and Comfort:
I actually really like how these look. Personally, I think that the "Gunmetal Blue" looks very cool. It comes with detachable and easily replaceable cables, which is good because I have never ever come across a worse cable. It is very still and coming from the nice and soft cable of the Sennheiser IE8, the cable and memory wire was definitely a pain to gt used to, but I have already bought a "Dark Lord" cable from a Head-Fier and I'm waiting for it to get here. I also have to say that I have fairly small ears and after an hour or so of wear, they become pretty uncomfortable, which I think has something to do with how the housing of the IEMs are positioned. If your budget permits, I would recommend you to look into reshelling them into a custom. It comes with a very nice case which UE claims is crushproof. It certainly feels the part, but I have no intentions of smashing a brick on them to test it out.
I don't see myself as a basshead and have to really EQ to get the sound that I want on the TF-10s. To me, the bass without any EQ sounds a tiny bit bloated and hits too hard. However, quality of and detail in the bass is very good. I think that some details are hidden by the bass. I love the low bass rumble in many of my songs. Many people will probably ask what the differences between the Sennheiser IE8 and these are. I will do a comparison of the TF-10 to the IE8 in every section.
IE8 vs TF-10 Bass:
I sort of agree to ProjectDenz on this. The IE8's bass is very hard hitting and is bloated to me. It reverbs a bit more than the TF-10. This can be both a good and bad thing. The TF-10 has better quality bass and slightly less bass overall.
This is what ProjectDenz wrote and I agree with it.
IMO, this is the TF-10's weak point. Some may say that the mids are not recessed. I however, believe that they are. Upon the first listen, I could immediately tell that the midrange was recessed and sounded quite distant. If you have something like a Westone, switching to a TF-10 will take a lot of getting used to. However, EQing fixes this easily and makes it very enjoyable again.
IE8 vs TF-10 Midrange
Both of those IEMs have a recessed midrange and I would say that without EQ, IE8 wins by a tiny margin, but with EQ, TF-10 can be better
Perhaps the strongest part of these is the treble. It is hard to describe, but at the top end, there is a sparkle to it. It extends very high and there is no sibilance whatsoever. Occasionally, these do cause listening fatigue. Some say that BA IEMs don't burn in, but I could have sworn that the treble because less harsh after I got around 100 hours on them.
IE8 vs TF-10 Treble:
At times, I found the IE8's treble to be a little veiled and the TF-10's treble to be excessive. However, I feel that there is more detail in the treble of TF-10. The Ultimate Ears Triple.Fi 10 win here.
Soundstage is good, but nothing special and truly cannot compete against the IE8. The IE8 wins by quite a large margin here. However, I think that instrument placement is around the same for those two. Maybe, the TF-10 is a tad bit better.
There is much more detail in the TF-10 and you can hear things that weren't very clear or in some extreme cases, unnoticeable on the IE8. The TF-10 wins by quite a bit here.
These IEMs are truly impressive an to me, a good upgrade to my IE8s. I would say that if you found them for under $150, grab it immediately. The sound signature is on the warm side and V shaped. I wouldn't recommend these if you love in your face midrange, but otherwise, these are an extremey good pair of IEMs. However, I believe that they have recently been discontinued. Their successor, the UE900 is supposedly better and more neutral. I look forward to trying one of them out. However, the main gripe that I have with them is that they have too much sparkle at times and it easily causes listening fatigue.
I would recommend that you use an amp with them, as without an amp, they hiss quite a bit and can get very annoying.
Edit: Dropped a star because after listening to them after hearing similarly priced IEM, they really aren't that impressive.