Finally received my Yersen FEN-2000. As always these days, when I buy new IEM, I compare it to Tin Audio T515, my benchmark and favorite IEM ever.
To start with positives, Yersen has insanely detailed sound, 3D-imaging, instrument layering and separation are absolutely stunning. Left-right channel separation is great. Soundstage is probably the best I have heard to date. Yes, I have to admit that detail and soundstage are even better than Tin Audio T515 which is very impressive.
Unfortunately there "buts":
- Bass is just not powerful enough. It is precise, pleasant but just not loud enough, even with good seal and bass-oriented EQ. From reviews I expected much more.
- Fit: bad for me. Narrow nozzles mean that my favorite tips (M from Rock Zircon) don't work here, I need something wider to get proper isolation, but with narrower nozzle hole (or however it is called in English). So it's really hard to get good seal and comfortable fit at the same time
- Also, volume curve is strange. For outdoor use I normally set volume on my Cowon M2 at 75% of maximum and Yersen sounds fine then (broadly as loud as other IEMs from same league) but indoor I usually set volume at 25-30% of max and while other IEMs sound fine at this volume, Yersen is barely hearable. Not sure if faulty IEM, or it actually happens (I just never encountered it before) or I am simply going crazy. It is not too big of a problem as it's always easy to just increase the volume.
Looking forward to follow-up model when and if Yersen decides to create it, but this one is clearly not going to become my daily driver due to fairly disappointing bass and problems with fit.
In terms of sound, it is definitely brighter than T515 but that's probably natural effect of lack of bass. It is not as bright as Alwup UPC630 (aka E-MI CI880, TIMMKOO C630 etc) which I think belongs to the same category of mildly V-shaped, very detailed $20-30 IEMs.
I would say:
- If you like detail, impressive soundstage, and semi-dark sound, but indifferent to bass, go with Yersen FEN-2000 (you are taking chance on the fit though)
- If you like detail, energetic bass, bright sound, but not too fussed about soundstage, go with Alwup UPC630
- If you like detail, good soundstage, energetic bass, and dark sound, go with Tin Audio T515
Anyone agrees? Anyone cares?
Edit: Reading few pages back, there is not unreasonable suspicion that latest shipments of Fen-2000 are tuned differently to earlier ones. Mine is new, so maybe that explains why I feel bass is lacking while reviews few months back praise the IEM for strong bass.