MacBook M1 vs M1 Pro
Sep 11, 2022 at 6:30 PM Post #2 of 8

tyk103

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Any difference in sound HW (DAC, amplifier)?
The new M1 Pro (2021+) MacBook Pros come with a more powerful DAC/AMP built-in compared to the previous gen M1 MBP and MBA.

DAC: Cirrus Logic CS42L84A-CWZ Audio Codec
AMP: Texas Instruments SN012776B0 Audio Amplifiers

When you connect headphones with an impedance of less than 150 ohms, the headphone jack provides up to 1.25 volts RMS. For headphones with an impedance of 150 to 1k ohms, the headphone jack delivers 3 volts RMS. This may remove the need for an external headphone amplifier.

I have no problems driving my HD 6XX with the new '21 MBP out of the headphone jack. The stock jack is good up to 24-bit/96kHz but an external DAC can yield more.
 
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Sep 12, 2022 at 7:00 AM Post #4 of 8

tyk103

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How to detect if that new feature exists on some Mac?
It's only available on all new Macs:
  • MacBook Air (M2, 2022)
  • MacBook Pro (13-inch, M2, 2022)
  • MacBook Pro (14-inch, 2021)
  • MacBook Pro (16-inch, 2021)
  • Mac Studio (2022)
 

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