To be clear. This is NOT the same quality as other more expensive patches and adaptors. But I bought them to have as a backup to get me out of problems and be able to finish my gig. And the do exactly that. If I'd need something top quality for studio jobs I would choose other adaptors or make my own.
I use it with Shure SE215 in-ears on stage and it's the first adapter I'm not having problems with. Usually there's some issues with having sound coming out of two sides but with Pro Snake TPA adapter there's no such issues. The sound is stereo all the time. Quality is also super nice. I got two pairs in case one will get lost.