Stuff you bought on Audiogon, but never have seen another?

This is tricky -  I have gotten some relatively rare items on Audiogon (Symphonic Line Kraft 250 mono amplifiers, Accuphase PS-500 regenerator / conditioner, Stahl-Tek Vekian Opus DAC, Tidal Contriva Diacera SE speakers) but I cruise the audio ads somewhat frequently, so its hard to say I have never seen another (although I would be comfortable saying no more than a couple). 

However, here are several "sole" examples I can think of:

Silver Rock Phono preamplifier  (was Stereo Times review unit)
EASE / Counterpoint Magnum Opus phono premplifier (a Counterpoint SA-9 with upgraded parts and cosmetics - only a handful ever made)
Silver Rock TVC with two switchable inputs (almost all of them are one input)
Promitheus Signature TVC (with two chassis and copper plates - still kicking myself for selling it)

Following up on the above posts, am a fan of MFA as well - Scott Frankland (the "F" in MFA) is a stand up guy.
 

Don’t see much in the way of "audio innovations" product lying about....

https://www.canuckaudiomart.com/details/649471135-audio-innovations-classic-25-early-audionote-best-...

Note (heh) the one line in the advert....:

"Audio Innovations was Peter Qvortrups first company before taking over Audionote UK."
Not really seen in the USA but much loved in Canada.

Pretty dang decent integrated for $600us. and, it has black velvet alps potentiometers/balance controls.

You can see by the layout that it is intelligently designed. Looks like it may never suffer thermal issues. That’s a good thing as other versions of it did suffer thermal problems. (800 series integrated, el34)

1) Voce audio V1 speakers - I bought the proto type from Vince & have never seen another pair offered.
2) Joule Electra Destiny mono amps - 310 wpc - I think only a dozen pairs were ever made (they could melt an igloo) 16 6C33B tubes per side.

@tonykay I have a Magus that I bought around 95. I only use it as a phonostage. I’ve had Scott Frankland upgrade it twice. A third time I gave it to him for a couple months to use as a test bed. He figured out a new mod he’d never done on any other. It’s much treasured but, if I had a chance on a Wavestream Kinetics phonostage, I’d jump. 

Nothing this week ill keep checking.