There are two Dude owners in Dallas. One is Gallant_diva: http://forum.audiogon.com/cgi-bin/fr.pl?vaslt&1066703453&openmine&zzAgear&4&5#Agear
There is another new Dude owner in Dallas who just replaced his Lamm pre-amp with a Dude.
You could always contact them and swing by for a listen.
I too am a happy Dude owner. When researching pre-amps prior to owning the Dude, two other choices I considered were Allnic and Shindo. I did not hear either but went for the Dude on gut instinct and the rest is history.