This was my first DIY, and a great learning tool! It uses 2 5532 op-amps for a clean transformerless sound. I run thru a Digi002, and I think these pre's are much better that the stock pres.
I took the layout and plans from the good work of Peter, via Kev from the old TT. Here is the page that has the walkthrough.
The next step on my green pre adventure. This is the new v.14 pres from Peter.