Bob has built the first one in about 25 years or so. The monster single ended Stereo power amp has 8 EL34 tubes and puts out around 70 watts each side. It is driven by the separate pre amp unit and if I understand this correctly it has 3 separate gain stages operate off different places of the circuit and can be turned on and off individually. He explains this in the video. This is the amp Bob designed 30 years ago and was adopted by Shawn Lane and has become known as the Shawn Lane Amp. This thing is a behemoth with it's Godzilla smashing through Tokyo bass, guttural, churning mids and it's 3 dimensionally huge single ended harmonics. I've not heard anything quite like this! Just look at the size of that power transformer! Bob himself was shocked by this thing since it's been so many years since he's played through one. He goes on to explain a little about the amp in the video. I hope he gets some more video before it goes out and gives a little more history and information on these and his time with Shawn.