Review of Thieaudio Legacy 4. Link of the product here.
I finally received the Legacy 4 and have some listening time on them, but I want to start with the content of the package. The set is really nice and every detail has quality: beautiful aesthetics and finish, excellent cable (no microphonic noises, Diamond cable had even better feel but a bit of noise sometimes), good cases (yes, a big sized and a pocket one), set of silicon tips in a CNC aluminum plate. There aren't foam tips but I find the set included works very good, with a tall shape, medium to small bore and quite good adjust in nozzles and also in my ears.
First of all, I haven't too much experience with iems because previously I only have KBEar Diamond and Apple Earpods. The fit and seal in ears are perfect, better than Diamonds which are comfortable for me but have driver flex and more weight.
For me is important the resin material on L4, beacuse the shells of my Diamond were metal and sometimes I had some little cramps, don't know if this is common. Also L4 have three tubes into the nozzle to conduct the sound instead one with a mesh filter.
About the sound, L4 is quite better than Diamond. I listen to different music styles from classical to trash metal, psychedelic, surf, electronic or indie in between... a bit of everything. As amateur guitarist I love electric guitar music and also analytical listening.
Bass is nice, sounds natural and well defined. Mids are the best of Legacy, near perfect in my opinion with a natural sound, presence and detailed. Treble is ok, but as I read some people, lower treble could be a "little small bit" higher volume than ideal for some music in a long time session. For me it's not a important nor big issue and adds more detail. Imaging seems good, notably better than Diamond and also bigger soundstage. Isolation from external noises was high, but not too much more compared with Diamond.
I would like more subbass quantity for my tastes due to weak rumble, but this is something subjective and quality is really good in my opinion. But the big issue for me of L4 is treble extension. When hearing drums for example, snare hits are a bit weak and cymbals sound a bit fuzzy and without the right definition (compared with a real ones). The same goes with claps, audience sound or high pitch harmonics. This lack of air wasn´t so big in Diamond and I guess if in top tier iems happens similar as L4 because I see a lot that have a similar FR in that region. I would like to know.
Anyways, the overall sound is really good so it depends more on the music you most hear and your sound preferences. Finally I want to talk about switches and my final adjustments. This iem has two tiny switches, and I don't feel differences between on and off in the first one and the second switch enhances a little bit bass and treble, but it´s so little that is difficult to distinguish in some music. At the end I prefer both switches off, and I tweak subbass and treble to my taste with an eq with L4 responding well. The final sound is amazing without fatigue and right for every genre. I enjoy hours and hours in my pc and also in an iPod.
As I haven´t too much experience with iems I cannot be much more precise and compare but this is my review haha. In conclusion this is a really good iem worth the price, accurate and bright sound, nice set and beautiful looks. Congratulations to Thieaudio and Linsoul for such a good product!