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Re:Apple’s $9 engineering marvel no one wants (2017) by holy_city on Monday April 08, 2019 @01:33PM (#19607252)
The link to the measurements from your source:

https://kenrockwell.com/apple/lightning-adapter-audio-qualit...

According to those measurements the adaptor's DAC is fantastic, especially for a $9 part.

And in the spirit of anecdotes, the old iPhone DACs were notoriously hissy and weak, and if you're buying high impedance headphones you have no business plugging that into a phone's headphone jack... spend the $20-50 on an amp/DAC and call it a day. Just a bigger dongle.

Re:Apple’s $9 engineering marvel no one wants (2017) by PascLeRasc on Monday April 08, 2019 @02:24PM (#19607760)
Sure, it's not a bad DAC and I'm happy with the sound on wired IEMs. It's just that I could drive my high impedance headphones straight from an iPhone SE and I can't with an iPhone 8. I lost functionality.
Re:Apple’s $9 engineering marvel no one wants (2017) by neves on Monday April 08, 2019 @02:13PM (#19607636)
Where you can find a good amp/DAC for $20?