I just built a Tau Pipe -- wowza!! The thing sounds amazing!
I updated the site w/ some pics and a panel wiring diagram, since I was so confused in the midst of building. The module pictured was a custom one for a DotCom portable rack.
I had a bad tantalum cap, and I know another customer had one too. I'll ship electrolytics from now on. I only used one LED. It really was fine.