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Can someone walk me through a setup process? I've been trying to connect my O2 Headphone Amp to my MacBook Pro and my BeyerDynamic DT880's, but I'm getting no sound at all. Thanks from a novice!
open Audio MIDI Setup.
click on Built-in Output.
plug cable into MacBook audio output.
Source changes from Internal Speakers to Headphones.
check volume and mute controls.
probably down too low or muted when cable is plugged in.
Thank you for your response. Now I have sound but it is beeping/chopping sound and when I play music, it sounds choppy as well. Any thoughts?
no idea. do you get choppy sound through the MacBook's speakers?
That usually means the batteries are running down. Plug it in; does the sound go away?
The only power source is AC...
Well, it does that on mine when the batteries are getting low, so it sounds like there's a power problem. Most likely a bad AC adapter, though possibly a bad unit. I guess I'd try swapping out the AC adapter first, and if that doesn't work making a warranty claim.
AC is more efficient for transfer.