[SunByrne]

This was discussed some on this thread:

http://www5.head-fi.org/forums/showthread.php?t=54575

Which suggested something in the 3:1 to 5:1 range might be about right.

 

[Paragon]

Also, remember that a lot of people modify commercial equipemnt to get even better performance out of it and also to hone it to their taste.