Great thread here! The Millennia TD-1 and STT-1 have been around for some time and oddly enough I do remember that issue of Bass Player.
And always remember, wow, I couldn't afford anything like that back then, but it was a cool shootout!
Back then is when I bought my QSC PLX2402 and Eden WP-100 'The Navigator' and kept that for about 10 years.
I recently went crazy with all the popular bass heads (Ampeg SVT's, Mesa 400+, Big Block 750 / Titan, etc), even the spectacular Demeter HBP-1 and VTHF-300M rig.
I have gone back to use my QSC PLX2402 and have recently paired it with an old Ampeg SVT-IIP. Still got my Aguilar DB751 as my more simplified but amazing sounding amp. However, I do miss the clarity of the Demeter. That's why the Millennia STT-1 (and a few other channel strips) really intrigue me.
I loved the parametric eq on the HBP-1. Tom Bowlus was actually the one that got me interested in that amp.
Since the Avalon VT-737SP has been mentioned, I'm curious what others have think of the Universal Audio 6176 or LA 610MKII as useful tube preamps?
I've heard some have really enjoyed these being used as 'bass guitar preamps'. Heard similar things about the Focusrite ISA 400 MKII as well.
Here is a great link for those looking at some of the other channel strips mentioned, but doesn't include the Millennia:
http://johnkvintageguitars.homestead.com/Channel-Strips.html