Hello,
I know this topic has been talked about a kazillion times on the site, so, sorry for the repeat.
I have a friend who just bought her first Alembic (at my recommendation!).... it has orion electronics, but she initially loved the essence electronics with  the filter. Where kind I find a description of what the filter actually does to send to her?
Thanks in advance. You guys know all!

Keith:
 
Bob Novy provided the club with an excellent explanation of the low pass filters Alembic uses.  It can be found here.
 
Bill, tgo