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


I currently own a Krell 400xi intergrated amp. It has 200 watts a 750k toroidal, balanced inputs, etc. Its very similar to the current vanguard intergrated amp in terms of similar spec's. I would like to know if anyone upgraded and if it was worth it? Is the sound different does it go lower, deeper, more of an open sound stage or should I just consider another route to improve what I already have.

thanks,

matt00
On the other hand, it goes without saying that not much can equal or out perform a 700CX!

The Vanguard is made Connecticut, not China.  There is nothing wrong with the "voicing" of the Vanguard.  It's the best sounding integrated Krell has ever made.  While it doesn't have the massive build of the FBI, I'm sorry, it does sound better in EVERY way.  It's far more detailed, has a larger soundstage, is much faster, less smear, way less blare and harshness.  I repeat, the Vanguard is the best sounding Krell integrated.  Some people like to get caught up in specs...but listen to it with open ears. 

As an aside, I compared my EV900e monos to the new Solo 575 monos.  On paper it's no contest, but when you actually listen, the Solo 575 are far more listenable, have even more control in the bass, much more open and effortless.  I even have a recording of EVO vs. Solo, no one has not heard the improvement.  I assumed the 50k 900e would be hugely better, but if you listen, and put the specs aside for a minute, Krell has moved forward here.  Both the Vanguard and the iBias line of amps are their best sounding gear.  I'm a dealer, but I'm also a critical, daily listener and user.

Dave b,  the new facility at krell never materialized! , go ahead, call Patrick,  he will tell you the same,  all of it! 
Audiolabyrinth, spoke to Patrick and as I suspected he verified that all product is made in USA now.  On the point of expansion to a new facility, that has not taken place yet.  Finally, as to the sound....I have owned a vast cross section of Krell gear dating back to the mid 90's and I know that to my ears the new Krell voicing is more musical.  Krell has also managed to deliver a clearer, more dynamic and expressive presentation.  As for those that will complain about feature set's on an integrated that competes with separates costing many times it's MSRP?  Well, I appreciate the exhalted level of sound available from a one box unit that delivers superior performance to just about anything available below $10K.