On my second after it died because YOU CANNOT CHARGE THIS WITH QUICKCHARGE seriously, it's even in the manual, it will kill the battery. Other than that, an amazing bit of kit, you can even get Crinicle's PEQ settings, on device if you dig.
Bought it from bezos a few months ago, it's been treating me real well. Literally my only gripe is with the goddamn buttons. They press so easily and they stick out the sides so much. Switching from the btr5 to this meant using the clip on the qudelix far more often. This isn't something you can throw in your pocket with your tucked cable.
Putting aside the estimated shipping date, there’s also the shipping fee (unless you purchase something else, to get you to the free shipping threshold of $125); which brings you perilously close to the $109, at the big A.
I will say the Qudelix 5K is a great way to experiment with tweaking your IEM’s sound signature. The 10 band PEQ, with 10 user presets is class (pricing tier) leading.
The 2.5mm vs. Pentaconn debate: I don’t hear the audio advantage to the 4.4mm, over the 2.5mm. If the argument is over the larger termination being stronger and less prone to breaking. What’re you doing, that puts the 2.5mm in peril ?