Got them on Kickstarter, not from Revain. There are two things to note immediately. First, it's a dual-driver IEM with a slightly U-shaped sound signature. The sound signature is not like "monitor" or "totally flat", but not too unbalanced either. Bass doesn't seep into the mids, treble "shimmers" but doesn't affect long-term listening. Second, each earbud has an almost invisible plastic sheet covering the contact points. I didn't know that and was very angry when they didn't report her case. It took someone from Head-Fi who had experience with TWS IEMs from other Chinese companies to tell me there was probably a movie in there. Since then they have been perfect. Unlike my Lypertek Tevi (much more expensive TWS IEM) they predictably disconnect from Bluetooth when you put them in the case, as intended. Tewi NO. Thing is, with Tevi I have to put the left IEM in the RIGHT side of the case and vice versa and even then sometimes they still won't disconnect from my phone. This makes them so difficult to use that I just haven't used them unless I've been to the gym or used them long enough to justify their uncomfortable performance. Again, there's no such problem with the CX10. These are the best TWS I've heard of the three I've had. I have an iFi Hip DAC and some great IEMs, but mostly I use the CCA-CX10 instead because they're pretty damn close to the quality I get from the wired IEMS I have. It's something special. Don't pay $80 for them - they're available for $50-60. It's not that they don't cost more, it's just that they come at a lower price. Enjoy!
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