diytube.com

What are my options for upgraded output transformers for this project? I'm hoping for something that would be a drop in replacement, or with minimal value tweeks to the board. Looks like I missed out on the HF-89 clones Eric had a while back. Are this availible through his winder, or elsewhere? Are there better options with Modern Q specs? Also. is there any reason to upgrade the Power tranny?

Still looking?

The reproduction power and output transformers are a good choice for a new Mark III build, but I don't think they would qualify as an upgrade.
http://store.triodestore.com/mk3trbuwfrch.html

The stock P782 power transformer does get very hot during use, but I see no reason to replace it.

If you must have some kind of exotic output transformer, I'd suggest contacting someone like Electraprint and see if they can custom wind something for you. I've also heard good things about the power and bandwidth capabilities of the Plitron outputs, but never tried them myself.

In what way do you feel the A431 is lacking?

My research suggest that the Mark3 OT are a good value, and sound good, but are not Great. I was looking for Great OT's what ever that means.

Let me back up!

After building a very nice ST70 using Shannons board, I'm ready to build a truely GREAT set of mono blocks. Having poor luck finding the hand holding I need to do this I thought about loosely basing them on the Mark 3 as a guide, but with everything upgraded such as the Posiden driver, SDS PS or better? and better OT /PT all in larger custom cases.

Perhaps this is not the best route to take with the proformace level I want, but this path worked wonderfully with the ST 70 build.

Is there perhaps a better way to acheive "World Class" for a semi newbie? Moving up past the upgrade routine seems to require massive engineering and mathmatical skills.