Earlier in late March I mentioned that there was a lucky bag on AliExpress for a Tri product, and recently I received it to find it was in fact the Tri Starsea.
Since I got them yesterday,
I've only used their default tuning (both switches down), but OOTB using generic foam tips I'm satisfied. I feel they're sort of u-shaped with this tuning with well-bodied vocals and highs being more forward than the bass. I was a bit worried about the whole source pairing dilemmas I've read about regarding them, but they sound wonderful on both my Shanling M0 and Fiio M7, with differences pretty much how I predicted they'd be: Shanling M0 is slightly warmer with more recessed vocals with slightly smaller soundstage while Fiio M7 has slightly more extended treble. I like how it sounds on the latter more, yet still from baskingshark's information it seems like the M7's <2 ohms output impedance is a bit higher than what is ideal? Unbalanced, the HiBy FD1 is bassier than the M0, has even further extended treble and slightly more forward vocals on than the M7. Balanced accentuates these traits even further.
Compared with my current favourite IEMs and the only ones I've purchased for around the same price (actually, for a bit cheaper than the Starseas), the em tee three hundred, mids/vocals carry considerably more body, bass has less initial slam but seems to last longer (neither sets as I've tried them are particularly bass-heavy though), there is slightly smaller soundstage width. But then we get to the treble, and there is significantly more control in the higher treble than there is on the em tee three hundred so for my ears I get practically zero sibilance. This works wonders in songs where vocals/cymbals can get real hot on the three hundred; with the Starseas they are so much smoother and feel more natural to listen to while not leaving me craving for a lot more detail. Still, when I'm feeling adventurous and the the wider soundstage and super airy treble on the em tees ultimately win me over.
With these I get the smallest driver flex I've ever felt in the right ear. Even with the generic foam tips I still feel it, but it may as well be non-existant. Isolation is pretty killer on these, it's like ~65% the strength of the KZ ZS3's isolation which is to say they seal pretty tight - much, much more than my em tees. For my intended use case which is when outside while commuting, exercising (I took them with me for an evening stroll and with foam tips they fit snugly even as the walking gets brisk), etc., I think I'll be really happy with these. Looking forward to trying the other tunings!