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Just received mine, first impression is not very good, i put to warm up. I bought them because I love Massdrop x NuForce EDC . Somehow Massdrop x NuForce EDC3 sounds now as flat, harsh and sibilant, I hope some warming up would help. However someone said that balance armatures do not need warm up. We will see... Any impressions from owners...
To me they seemed to have a really harsh treble, but either I already got used to it or they settled down somewhat. Try giving them a few hours.
Mine had some initial harshness, but settled down to a very smooth sound after a few hours of break-in.
improved after 200 hours! burn in
Yeah for me too, especially the soundstage seems to be a bit more balanced now, and instrument separation is a bit better. The sound now is fantastic, very very close to what I expected and wanted, so the long wait was worth it.
I still think that the way these IEMs beam the vocals right into the users brain isn't necessarily a thing for everyone, but I like it, even more now that it's not as distinctive as it was out of the box, when most instruments were almost "background noise" (exaggerated).
By the way plugging these into my O2+SDAC further improves the instrument separation and soundstage
I'm really happy, except for two things - one really minor, and mostly my fault, and one that makes me a bit concerned:
1. the inside cloth of the carrying case separated from the lip near the zipper on the top piece, but to be fair I crammed these and another pair of HEM Dynamic into it, with a complete set of eartips, so... yeah, probably wasn't meant for that, and since I have the HEM Dynamic, I also have another carrying case, so it's really no big deal (unlike no.2)
2. The connection between the left earbud and the cable is not as strong, and on multiple occasions already I had to plug the cable in more firmly or try to unplug it and plug it back, as I was getting cutouts when inserting the earbud into my ear. I'm using the braided cable that was pre-attached.
So far it doesn't make for a big issue, and I have no issues like an earbud randomly falling off (like some people did with the EDC), but still, having this problem only after ~2 weeks of using these is... troublesome. Add to that that I'm in Europe and getting a replacement cable (or asking for an extra one) would be an expensive pain in the posterior, it really doesn't fill you with tranquility and faith that these IEMs are going to work for a long time.
In the most scientific test in human history, I tried to test the loudness of the left/right earbud, by plugging these into my O2+SDAC dialed all the way down, and playing a song, slowly increasing power. Then I dialed the volume to my normal listening levels and went down, listening with just one side at a time.
This way I discovered that at a certain very low power level, the sound in the left earbud "cuts out" - it doesn't quite, but there's a sharp drop in volume. For the left earbud, this drop comes first - the right earbud can still go to a lower power level before this "cut out" occurs in it.
Whether this volume difference is within the tolerance level of the IEMs, I have no way of testing. In normal listening conditions it doesn't seem drastical, and the earbuds seem to equalize a bit when given more power.
Fortunately, these fit, hold and isolate very well for me, especially with the foam eartips, so so far I'm not really concerned about loosing the left earbud, but I'd really hate to be proven wrong on this one.
Overall if they continue to work properly I'll continue to be very happy with my daily drivers
@Jyri would you like to comment?
P.S.: This turned out to be a lot longer than I really thought it would be, so in case you're reading this, go reward yourself with something - you've earned it.