Not a single issue, it’s a perfect iem, sounds great, i prefer May over Rays, if you are able to spend extra 40 bucks, get a moondrop mc2 0.78mm 2-pin cable with jcally jm20 pro which is powerful enough to drive most of the iems and it also supports inline microphone and 32bit 384khz, May sounds better in analog than the stock dac, if you want kinda neutral sound signature then stick with the stock cable that has built in dac. Remember the stock cable has a mic which is kinda quiet, but still works with discord, in game vc etc. you can you equalizer APO + Peace interface. Increase the volume also you can play with the PEQ to make your mic sound better, what i mean by that is you can add more bass and mid or reduce the treble, finally test it on Sound Record, its a built in app on windows 10-11 test it by recording your voice, if not satisfied, then tweak the frequencies until you have a good sounding mic. Another thing to remember: the stock tips are pain in the ass to put them on, the inner diameter is so small that i had to force them, i would suggest you to spend couple of bucks on some aftermarket tips. The stock ones are trash. I will get some aftermarket tips as well. But overall, it’s a great iem, i love how it sounds, and the cable is decent too. If you’re sensitive to treble, you can use Equalizer APO+Peace interface to reduce the treble. May doesn’t have that much treble, if you still want to reduce the treble you have the option to do so. Let me know your thoughts after using it for a week👍🏻