Is there Really a difference between a Krell 400xi intergrated amp and the newer Vandgard?

** Krell dealer disclaimer **
The Krell Vanguard is the best sounding integrated amp they've ever made.  I've spend lots of time with the KAV-300i, KAV-400xi, F.B.I., S-300i, and S-550i.  The Vanguard wallops them all.  The detail, the lack of distortion and smear is SO much better than all of the others.  It's also a serious work horse, I've run it in situations it was not designed for, and I was amazed at how it put up with it.  Krell rules!  :-)
-Brian

I agree Brian, I tried them all as well!  

Octet11, I highly recommend Music Direct...they are a class act and you can return anything you don't like after a thorough listen.

Does the vanguard have cast connections? 

Thanks! for sharing- herndonb-

And dave_b.