Quote:
Originally Posted by fatko
but i thnk .. it is no harm to turn it on , right?
at least i dun want to turn it back after some comparison in my system ..
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You can/should leave it wherever you want that you think sounds better, although technically it should change with different recordings.
Jefemeister was correct...absolute phase varies from recording to recording. In a perfect world, 0 degrees would be the only phase you ever need. However, phase can be reversed at many different stages in the recording process, from microphones being wired improperly to inverting the phase during digital mastering.
Allegedly, incorrect phase reveals itself most in the low end, particularly in the kick drum or more percussive passages on a string bass. That makes sense, because what's actually happening (when the phase is wrong) is that your woofer will pull in when it's supposed to be pushing out, and vice versa.
It also makes sense that incorrect phase would be very difficult to detect using headphones, because the difference between your 'phones transducer moving in or out is almost microscopic.
I have a phase switch on all my DACs...one model doesn't even indicate which position is 0 and which is 180. I play around with them occasionally just for kicks or if I think a certain track has a limpid low end, but for the most part I ignore the feature. The audiophile police haven't caught me yet!