I have a Vincent SA-31 and re-capped and replaced the tubes with some Russian 6N16B-V's and it sounds fantastic! I have quite a few left over so I am wondering if/how I can utilize them in a modified version of the Color Preamp? I bought a Hammond 262EE6 transformer (120V Sec@ 93ma + 6.3@1.2A) hoping I could use it for this project. Any advice on how the schematic could be modified for their use would be much appreciated!