I have loved my Sure 846’s for 7 years. It was therefore with trepidation that I approached getting a new pair of IEMs. Finally, after much reading, I passed on the Campfire (my initial choice) and went for the U12Ts. They have been a great purchase. I am thrilled every time that I listen to them. The sound is just honey for the ears. I've tried several tips but prefer the fit and sound isolation of the foam tips. My only concern is that the two wire cable connection seems feeble but so far it has not given a problem. Wonderful IEMs. Got the upgrade cable as well which is very nice. Great service from Bloom Audio.
My go to IEM for years has been the Shure SE846. I was originally interested int the Campfire Audio offerings but changed my mind and have been eyeing the u12t for several months. On getting the u12t I hours and hours over two days listening to different kinds of music on the SE846 and the u12t both running off a chord mojo or from a Woo WA7 Tube amp feeding from an RME ADI-2 dac. Here is what I found.
Initially I was taken aback by the stage. The voices on the first few songs I heard were set back. Then later I heard other recordings were the voice was front and center. Then I realized that the u12t was probably giving me a better sense of the imaging that the engineer had intended for the particular recording. I was impressed by the placement, detail and separation. Just beautiful to listen to. Whether folk, or jazz, or alternative rock, classical the effect was impressive. After two days of listening and an extended bout of a few hours with the u12t I felt disappointed going back to the se846. It is still a great little IEM but just does not give the experience. There is almost a previously unnoticed muddiness specially in the bass in the se846 that the u12t just dispels. Ended up switching to spinright tips for ease of use but the foam tips were great. Very happy with my purchase. For the enjoyment they give in such a little package well worth the price.
On a side note the service from Bloom audio was superb. They noticed my browsing patterns on the site, courteously asked if they could help and they solved the problem I needed solved to make the purchase. Delivery was prompt and I even got a chocolate bar out of the deal. Very impressed with their responsiveness and plan purchase from them again.
There are many positive reviews for U12t. I waited until now (late 2021) and I wish I got this sooner! After cycling through many multi-kilo-buck IEMs, including 64's U18s, I have to say this is the best multi-purpose for me. It has the balance that rivals the likes of Oriolus Traillii. Open, spacious, solid bass, mild-v to neutral tuning, and a good timbre. U18s tops U12t with better resolution and note weight (I took one star for this) but I found U18s lacked openness and dynamics. U12t shows excellent dynamics and the snare rim shot feels like it strikes through my crown. I suppose you can say this doesn't have a "character", but if you are after a neutral monitor, this is it.
Beats the rest.
My other two IEMs are Shure se846, and Noble Kaiser 10. The U12t has significantly better sound quality than either of my other IEMs, but is not quite as comfortable as my Shure. The U12t comfort is good, however, with Final Audio Type E tips. I prefer the 64 Audio m20 apex modules. I could not use any of the supplied tips. My chief complaint is the lack of documentation in the package. I had to go to the the 64 Audio website to identify the 3 supplied sets of apex modules (gray = m15, black = mX, silver = m20). I'm using the U12t with my Astell&Kern KANN Alpha, and Moon Audio Bronze Dragon cable, with great results.