Don't current 'THX' rated processors have a 'post processor' for 'THX'.
THX
is post processing. It takes a processed signal (Pro-logic, PL II, DD or DTS) and applies post processing (re-equalization, timbre matching, decorrelation, etc) to it.
I wonder if a vacuum tube processor could be designed and built without ANY transistors or ICs???
Jim Fosgate, inventor of Pro Logic II, designed the FAP-V1: a tube based PL II surround processor/pre-amp.
How much do you think that would cost???
$7500
It was displayed at CES 2001; see photo
here . I don't think it ever came out and Fosgate Audionics is now talking about a 2003 release, saying that the delay will translate to a better product. (Sound familiar?) To see the specs of the FAP-V1, check out the original press release
here .
_______
Sanjay