Hello everyone,
I have seen threads where DIYers have split the ST-70's power supply into two channels requiring two chokes (and/or current inrush limiters) and/or builds which utilize lower-DCR chokes (than stock) or Miller chokes to improve the power supply. I have even heard from tube loyalists who recommend I remove the choke altogether ("too high DCR")! I am wondering what methods are the best for improving the fidelity of the ST-70 in terms of it's power supply.
I am currently using the SDS cap board in conjunction with the VTA driver board (low-gain 12BH7 model).
I understand there is a split between builders who try and stay true with a 5AR4 rectifier and others who wish to use solid state rectification and I am open to opinions from both camps. I would just like to know more about different ways to improve the ST-70's power supply, even if that money could be better used towards a better amp. I alternate between the 5AR4 and the Weber CopperCap rectifier, though I seem to prefer the Weber.
I may end up asking this question on other forums, but I felt here was the best place to start. FYI, I am using the dynakitparts.com transformers.
Best,
Brinkman