Thanks Dave.  Tried that.  Along with eq'ing before and after the amp.  Also checked to see where it occurs so I ran just few preamps without anything front or back and no cabinet.  It's definitely the preamp doing it.  The cabinet knocks a little off.  But it's a really nasty buzzy thing and rather than me getting used to it, it's starting to irritate me more. 

I actually get a better sound by just using a clean Deluxe and then running my Catalinbread DLS, RAH, and SFT pedals into that.  That DOES sound pretty happening.  But it kind of negates some of the value, ya know?  I do really like the sound of the models overall.  I just dialed in a Hiwatt patch that's dead on The Seeker by The Who.  Only thing is, that fizzy, buzzy thing is even more noticeable on a trebly kind of patch like that. Took it down to the basement and ran it through the PA just to see if it was less noticeble.  Ouch, when it's that loud there's no getting away from it. 

Still on the fence.  Need something to go direct with, and it *is* an alternative to a Weber Mass, I suppose, with some additional bells and whistles.  But I still may try out an Eleven Rack.  Wish it was a little easier to dial in something no frills.

Yeah, that's the latest.  First thing I tried, actually.  But after going through a lot of the commentary, I wasn't really expecting that either.  I did read one that speculated it was strictly in the power stage, but my experiments with the preamp tend to contradict that. 

I *did* manage to get it knocked down somewhat, but only by lowering the amount of distortion generated via the amp model and moving it over to things like the Tube Driver effect.  Which again, kind of negates the value of the model.  I've seen statements by some that this kind of thing is just coming because L6 is accurately modeling the noise coming from the amp.  If that's the case, then I'm not sure this bunch is as smart as everyone gives them credit for.  Assuming you have full control of the signal composition why would you choose to keep something undesirable.  And given that it happens on different models I think it's just a software deficiency.

Again, I haven't ruled it out. It does actually sound better now and I was primarily interested in it as a recording tools rather than for live use.  So I may just drop down to a 300/400 or Pod HD but I haven't made up my mind.  Will probably use it for a band practice and see how it works out.  And I may give an Eleven Rack a try.