Great to see, Impressive, Pardon me if I still have doubt that the lightning version (not USBC), designed to connect to a phone, and save battery, actually output 31 mW in 33 ohms in real life. I certainly sound very anemic, those are great measurments, but those things don't have a power supply! The performance will be directly impacted by the power that can be fed to them, so altough I admire the prowess being done with so little money, I was more interested in what it could achieve when connected to a phone since we are on a portable amps tread.