In terms of which component contributed the most, I would say the one that replaced the weaker link. While Newbee is correct in his assertion that if the source doesn't get the info off the disc, it can't be reproduced, it is also true that a weak component anywhere in the chain can lose that info. I have only carefully auditioned a handful of pre-amps, nad have always been amazed at how much they can change the sound. It seems like they have an easy job, but it's difficult to find a good one.
regarding the phase issue, if you have good bass, you probably don't have any phase problems (unless you are bi-amping). I have heard the effect Newbee describes in car audio, if I had, say, the two midranges out of phase. It sounds sool for a few minutes, then just wierd.
regarding the phase issue, if you have good bass, you probably don't have any phase problems (unless you are bi-amping). I have heard the effect Newbee describes in car audio, if I had, say, the two midranges out of phase. It sounds sool for a few minutes, then just wierd.