I had one extra set of parts, and I gave that to a good friend - he lives on the other side of the world! - because he wanted very much to make one for himself. I don't plan to sell this is a product because it's too limited in what it can do. I did publish the most important parts of the schematic in an article for audioXpress magazine, and that article should be online in a few more weeks. I may just post the entire schematic at some point if anyone cares. The main problem is the meter driver doesn't work quite right, so I'd have to spend time fixing that first.