Yup. I guess the old images were just placeholders.
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Not that I don't enjoy a good photography discussion, but I'm really happy we're back to audio again. I take all the blame for side tracking the discussion earlier. Sorry, guys. The iPhone measurements, however, are still low enough to be inaudible. I wouldn't fret, and never have fretted, about using one as a source. Driving a 600ohm Beyer in my experience is a no-go, but it sounds fine with my Grados. That's my preferred combo for listening to music before I goto sleep, for practicality reasons. The only thing I feel like I'm missing compared to having them amped is jump factor, which is something I have zero problems sacrificing during bedtime.
What sort of test did you do to determine that?
You are hearing music, not sound quality. Do a direct A/B line level matched comparison and I bet you find that the difference disappears.
Every Apple product I've ever had has sound specs below the threshold of human hearing.
Were any of the people you talked to in this video?
Modern ipods have improved quite a bit. Going back to first gen ipods, you can see the second harmonic was -75 dB in this review of the first product (-3 dBFS into 150 ohms)
Modern ipods have second harmonics around -95 dB under much tougher conditions (0 dBFS into 32 ohms). You can also find plots that show a 2010 vintage ipod was about 5-10 dB worse in terms of harmonics.
I think the noise floor of modern ipods is much better too.