another thing to consider is the different surroundings and equipment we all use, some are in big rooms and some aren't (me = mid sized)....some have revealing speakers (MA Gold Ref 20 = quite revealing) others have more neutral gear.....some use headphones exclusively and therefore are probably more prone to heavy variance than those with speakers - there's alot of variables.
i wouldn't call the difference between the 7510 6/4 and the 7520 night and day (that would be foolish and a disservice to the 7510) but it's more pronounced than i expected with more bass and cleaner resolution all around - without waxing lyrical it's more energetic than the 7510.....i've certainly never heard MJ's Thriller album sound so lively. can't comment about the CA Azur as i don't own one.
i for one didn't state a huge difference when changing psu's but my first reaction was that bass felt a touch deeper, this could have been the actual DAC bedding in as i changed power after roughly 80-100hrs on the unit and until i have more time to test between the new and old it's hard for me to really gauge anything.
it's all subjective at the end of the day and i doubt you have upset anyone, only you and your ears are the things that matter.




Originally Posted by drumlins4ever

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