I am finding this thread intriguing as I am looking at upgrading my source, probably with either a Cambridge 640c or the Music Hall 25.2, but am also looking to replace my amp soon, looking at the same model lines. I keep going back and forth as to which to replace first, and these postings have me questioning how important the source is vs the amp. All thoughts are appreciated. If it matters, my speakers are paradigm studio 20s. Thanks