It is a wonderful preamp. Fred is a talented designer. I have an Emotive Audio Epifania preamp and Vita tube amps and love it. Music just comes alive.
If you want to make it even better email Fred about the copper V-Caps and the autoformer volume control. They are not cheap to do, but they brought my Epifania up to a whole new level.
FWIW, my Epifania is #2 and it's been in my system for 15 years now. I don't think I could ever part with it.