Yes I am. Or I did, I should say for many years. Just last September 2011, I started using a pair of Vintage Polk SDA 1 from the mid/late 1980's. I use these without the Stereo Dimensional Array function hooked up. So I use them in Stereo of course.
The LS90's and the SDA 1's have a simple enough crossover and sensitivity that the 4 to 8 ohm Zen Select (CS & CKC) can drive them at 76 to 84db SPL with great success! I own 9 pair of Speakers and have owned others now sold that do not play well with the CS or CKC.... . However, these two pair are magic.
Full range Drivers are wonderful and I have been to Decfest in 2005 and 2008 and much enjoyed them. However, I like to exploit Steve's Zens with the Original SV83 Svetlana Tube compliment and my reference cable....Kimber Select 1030 & 3033 run directly out of my Audio Alchemy Pro 32 with AA 3.0 DAC.
The tonal balance, clean extended treble and accurate bass is to die for. Not to mention, but I will-soundstage and imaging destroys Solid State. Lit from within with tone & timbre is an understatement. I chose the moniker Stone of Tone because of this/these great Amps!
Cheers, Stone of Tone
PS-Stone of Tone comes from the late great Harvey "Gizmo" Rosenberg whom I miss his prose dearly.
Harvey said:
"Musical consciousness, less than one hundred years ago, decided to use male DNA, to get higher, and wider. So this force hooked up with electricity, and created the vacuum tube, and the rest is history. Every audio artisan can trace his roots back to the Triode Big Bang in 1907.
This is how musical consciousness evolves its intention through human DNA: it chooses a very small group to do its relentless escalation work…by endowing this chosen group with nano-harmonic musical consciousness…while billions of others, and, most in the audio industry, are completely clueless about this genetic impulse to ponder the nano-level of existence. How can I be so certain that this is how the process works: if you feel it, you express it. If you don't feel it, you are passive. That is the bottom line".
http://www.meta-gizmo.net/