Recommend relatively obscure high end tube preamps

I'll throw in the Single Power units.Ultimate Maestro SDS XLR. I have an upgraded prototype MPX3 SLAM the designer shipped too me to play with. I can only imagine what the top headamps/preamplifiers can do. 150lbs is a lot of preamp..this is a serious piece of equipment! Scroll to the bottom of the page to see the top models. I'm not affiliated with this dealer or the company. I just know this is some great sounding equipment. The units even come Gold or Nickel plated at your request. All units are custom built to the owner's taste. It doesn't get much more esoteric than that. Mikhail is also one of the nicest guys you can call and chat with in the industry.

Good luck!

I am completely satisfied with my Callisto preamp and also have to add that Jim White has been incredibly accomodating and helpful. I would recommend Aesthetix to anyone looking for a preamp. I'm simply thinking about getting an interesing preamp for my half-built second system.

Fi does look interesting, as does single power.

I sold the Wavac at a too low price a few years back, before the MSRP doubled. It was the singularly most musical (romantic) preamp I have owned and imparted a magic that made everything sound good. The rationalist in me said that can't be so I sold it thinking neutrality was more important. I'd say that music is a visceral experience first and cerebral second.

supratek,thor, blue circle. if it's not point to point, don't bother.

It was the singularly most musical (romantic) preamp I have owned

Looks like you should really give a Fi amp or preamp a try!

Of course, also trust Gmood1 to come up with the most obscure and wonderful sounding gear out there.