Who is using passive preamps and why?


Seldom has there been any discussions on passive preamps in the forums and although my experience with them has been limited I have found them so far to be very enjoyable and refreshingly different. They seem to fall into their own category, somewhere between solid state and tube. Finding a preamp that is satisfing has been difficult. Some active solid state preamps can be very good but they seem to inject grain to some degree in the upper registers and some tube preamps are not too far behind. So far I think they should at least be matched up with an amp that has sufficient gain which is often overlooked. Which passives are you using and with what amp? Why do you like them?
phd
I think I speak for everyone and appreciate the link to Jeffrey Jackson, very interesting concept. Somewhat unconventional, definately not the prettiest looking design but isn't that the kind of gear that usually sounds good!
I had the TAP-X and although it didn't float my boat, I can see what all the fuss was about. I preferred the Sonic Euphoria because it seemed more natural, while the TAP seemed more hi-fi like.

Shakey
Dave Slagle is selling them too now:

http://intactaudio.com/atten.html

I spoke to Jeffrey about redoing my Slagle box. He is very detailed and does great wood work. I still may pursue this with him but for now need to finish my balance passive project.

I've been hearing a lot about the Sonic Euphoria. They have a balanced version I'd like to try. However, I'd be concerned about support as I don't think they are manufactured anymore.
I would think a passive is very unlikely to ever need any support, no capacitors, no resistors, you should be grey before anything goes wrong.