My LG G6 supports atpX, and it's sometimes hard to tell the difference between the wired and wireless Porta Pros. I'd say the wired lean towards more bass/less highs and the wireless has better highs/slightly less bass, but I don't have a lot of hours on the wireless set and PPs tend to mellow a bit as they break in. I could also tell the difference when used with my phone vs. my non-atpX laptop. These also sounded pretty shakey right out of the box, but are coming around nicely. I read that Macbooks and iMacs support atpX, but if you used these with an iPhone you'd merely be using SBC. I can understand why some iPhone users are upset, but I'd also argue that the average Android and iPhone users don't care all that much (based on the plethora of terrible sounding Bluetooth headsets I've auditioned that other users seem to love). The Massdrop Audiophile Community member is certainly not the average user.