Bluetooth is awful, but why would wireless in general be fundamentally inferior? I routinely see 150 megabits/second over WiFi, enough to stream a 4K movie, and it's 100% digital. Seems like the main advantage of the lightning cable is supplying power to headphones, so they don't need a rechargeable battery. Glad to see one headphone maker is supplying an equalizer app, because this is typically the main issue when you go digital line out - sometimes you can't even adjust the volume locally, let alone equalize it.