My pre inverts phase, I just invert the speaker polarity. Although my DAC can invert phase I want the phase correct with all sources.
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Fact is CDs do not have a mix of polarity, the vast majority are inverted. Lots of coverage of this online, the link below is to one of the most well known sites. Changing polarity on my Paganini is a pain so I set it inverted for the majority, I try not to use the polarity change switch on the amp if I can as as another commentor pointed out it does change the active circuit. Just occasionally I find an LP that benefits however, for example yesterday on the "Breaking Glass" S/T (no great recording but inverting really helped) http://www.absolutepolarity.com/ |
What is interesting and a little mysterious in George's very thorough explanation of absolute polarity is that entire CD LABEL repertoire are inverted polarity which seems to rule out randomness of CDs being inverted polarity. Mapleshade is an exception but on George's list the big boys like Mercury Living Presence and RCA Living Stereo CDs and Deutsches Gramophon are inverted polarity. So, ensuring one's system is polarity inverting might actually be a very good idea if his taste runs toward classical music. My only nagging reservation is that nobody else has confirmed George's list as far as I know, which does show an overwhelmingly high percentage of CDs having inverted polarity. I do find myself much preferring analog versions of RCA Living Stereo recordings including cassettes over the CD version, but it's difficult to say whether the reason fir this preference can be attributed entirely to the difference in absolute polarity, but I'm open to the idea that it might be a lot of the reason. |
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