Audio only coming out one side of headphone port - Retina MBP

I bought a retina MBP a few months ago, and suddenly the headphone port only outputs to the right side. It does it with anything I plug in to it, so it's definitely not the speakers/headphones. It's also not the balance slider in the system preferences > sound menu.
Does this mean it's a hardware problem? I'd hate to have to send it in for repair, but this is driving me crazy.
Thanks for any help!
edit: I've also already reset the SMC to no avail.

System Preferences > Accessibility > Sound
Make sure that "Play stereo as mono" is not enabled.
Headphone jack fits in snug in the port?
Tried resetting PRAM?
If these steps do not help, you may have to contact Apple.
Best.

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Hey all, I got my Ipod Video 8 months ago. Everything was perfect until recently. One day, I turned on my Ipod and sound was only coming out of the left side of the headphones. I thought it was the headphones, so I tried the headphones on a computer. And it was fine on the computer. I tried 3 different sets of headphones on my Ipod and still the same problem, the sound only comes out of the left side. If I move the jack around, sometimes sound will come out of the right side, but only briefly. Any suggestions on what I can do?
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marcmax123 wrote:
Is there a way to fix this in garage band?
http://www.bulletsandbones.com/GB/GBFAQ.html#leftspeakeronly
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I believe I have the same problem with you guys but managed to get it solved.
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I tried taking the jack out half way.. and I had sound for both ears but still at max level.
Then I searched here and found the suggestion for basic steps of 5R.. Reset, Retry, Reinstall, Restore.. (only remember 4 out of 5 here)
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Chris Huber wrote:
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You are still under warranty. Call Apple Care.
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#2 - You have 90 days of FREE phone tech support.
#3 - You have the standard one year Apple warranty.
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I also tried jamming a toothpick inside to turn it off which didn't work as well
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--Travis

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Audio only coming out one side of headphone port - Retina MBP

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