It really depends on the application. Toroid trannies have a far higher primary to secondaries capacitance, hence more noise than EI trannies, it's true for power transformer but even more for OPT trannies. For Power transformer you can deal with the noise by adding more filtering at psu stage...

Seems like you're talking about the Tubelab SSE witch is present in my photobucket library, if that's the case, yes the OPT are Edcor (CXSE25-8-5K) the Power tranny is a Hammond 374BX (good transformer but tend to heat up quite a bit).   The Edcor are superb, no noise whatsoever, just great...

Well I took a little time studying the schematic and photos of Artsi's build. I came up with a complete schematic (amp section and Psus) but I'm still wondering about the res and cap in parallel with the two 1000uf 250v caps, I think the res is a bleeder but not sure about it's value, the poly...

Thanks a lot Artsi for sharing this built, I'm really interested to build one myself, I just need a clearer wiew of the PSU side as it will be my first PtP build.   I shall make a photo WIP of the build, as it may help others too.