Thanks to everyone who responded with valuable links and explanations
However, "jjss49" noted: ..." this is the internet...and search is your friend" Well bully for you!!!.
Maybe, we should abandon these forums and just crawl into our internet cave, and let our fingers do the walking( searching) Audiogon is a membership, and also a fraternity of people interested to high end audio and quality sound.
It seems that member " jjss49" does not agree or just wants to eliminate the human element altogether. His comment seems unfriendly and not in the spirit of the Audiogon's forum option