I had to hear for myself what SACD sounds like, so I drove an hour to a dealer. It took less than 5 minutes to realize that SACD represents the biggest sonic improvement I've ever heard from a single change or am ever likely to hear--short of virtual reality. Over time, as the quality of SACD mastering improves, just as it did with 16/44.1 standard, we can expect wonders to be everyday occurances. Many early adopters describe their good fortune on audioreview.com. In my own system, it would have to be going from stock cords to custom powercords--proving that cords are components too.
Biggest Sonic Improvement
What is the biggest sonic improvement you have ever made to your audio system. Mine was a surprise to me. I replaced my Audioquest PT6 tonearm on my VPI turntable with a VPI JMW Memorial tonearm. The improvement in the sound nearly knocked me off my feet. I never realized a tonearm coud make that much difference in sound. How about some of you guys, what has your most exciting improvement been.