So my Beyerdynamic DT 990 Pro headphones *requires* 250 Ω of power.
I have a MacBook Air M4 2025, and apparently it detects loads from 150–1,000 Ω.
And what happens upon detection? It provides up to 3.0 V RMS from its headphone jack. That works out to roughly 36 mW maximum into 250 Ω.
That means this laptop does NOT require an external DAC.
Chris Trottier
npub1e9…xmsz2
2026-10-07 21:23:59 UTC
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npub1e9xty8eww57a3npv2vfl5cel567cd0k4stqu89aa6l0undk0pr8shxmsz2Published at
2026-10-07 21:23:59 UTCEvent JSON
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