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Fix MacBook Pro sound distortion

I have had a MacBook Pro 15" i5 (2010) for a number of months.

Since it was new, it's had a horrible distortion of sound at low volumes. Very noticeable on headphones and with quiet music. I had resigned myself to having a faulty computer and just putting up with it.

Well, it's not faulty. It's a software setting. I suspect there are millions of frustrated MacBook Pro owners in the world who are putting up with this for no reason.

The fix is to open Audio MIDI Setup (Applications/Utilities) and flip the format to "2ch-32bit" while playing something that causes the distortion. "2ch-16bit" mode is broken.

The improvement should be instantaneous.

I am somewhat upset at the number of months I've put up with poor quality for no reason.