I happened to run across a nice video with some good information on various audio connection types today. It's on the Audio Precision (the analyzer folks) web site. If you ever had questions about balanced vs unbalanced connections this will help answer them. It's not the last word but I'm sure will demystify things for a lot of folks.
http://ap.com/support/training - click on the "Connections Tutorial"
This only works in Internet Explorer and is of course geared towards connecting your AP analyzer (I wish) but is very applicable to every audiophile.
