rsf507,
Thanks for asking.
Basically, there were two parameters that impressed me. 1. Front to back imaging with RCA Living Stereo records — very impressive.
2. Bass response. His new speakers (GoldenEar Triton 1) have built-in subwoofers. I have none. Again, very impressive.
His music room is a hole of a basement surrounded by thousands and thousands of CDs and records.
After the shock has worn off, I’m listening to my system more calmly and don’t feel so bad, thanks to your question.