I bought this preamp here on TB last year. I used it for quite a while with a Radial JDI and then went another direction. Works really well and is quiet. It's enclosed in a nice solid case. Schematic can be provided at time of sale. I'm asking $85 shipped CONUS, paypal ok. Here is what the guy I bought it from last year said in his posting: Years ago I had an Alembic F-1X and I really liked it. I did a lot of touring with it, but I always hated flying with it because of it's weight and size. Then I got into some DIY stuff and decided to build one. Anyhow, after building this one I built an amp with 2 of these in it. I've always used this one for recording because it's so small and easy to deal with, but I've got another one of these in a different package and I've got the hankering for something else. That is the reason I'm selling it. Differences in this pre vs. the real deal include: -no crossover -no output transformer; just 1/4" output -no bright switch. This is easy to add with 1 cap. -slightly modified circuit for cleaner tone. Can be modified back to original but don't ask me to do it: I think it sounds better as is. Size is 7.5"x2.5"x5" Not sure on weight - a couple pounds or so. I've used it for a lot of recording and gigging where I've run it directly in to a powered speaker. I'd prefer to sell to someone with some kind of DIY sense, just in case it ever needs to be opened up - there's 300 volts of DC inside. That being said, I have never had a single problem with this pre in the 4 or so years I've had it.