I do not own the Hattor but own Arek's Khozmo passive. Excellent passive but definitely prefer the Dave Slagle autofomers!
Hattor Audio preamps?
Got my eye on one of these. And yes, my system is passive friendly. I've had resistor based passives before, as well as transformer, autoformer and LDR preamps. So I know I like the sound quality which can be had with a passive. Anyone out there have any experience with the Hattor stuff?