Yes, although it is not absolutely necessary, it seems like nearly everyone gets better results with DC heaters on the EHHA. The gentleman who built the Rev A proto had the same result too.
EHHA Rev A - Interest Thread - Page 6
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Next thing you know people will want all in one stereo config with integrated DC heater supply. >.>
Anyways, I like the current board, and I don't mind running a few wires over the score line. But if the board could be in red and yellow to match the millett filament supply it would be even better! :p
Edited by ujamerstand - 8/17/10 at 5:38pm
Quoting myself of a few posts back:
I'd prefer black boards - I built an exstata from the last "beta" run and those black
boards are really beautiful! Far better than the common green ones.
I'd vote clear, but I love the look of the bare copper.
Black (and yellow) are apparently the worst choices for soldermask from a testing and manufacturing point of view. The mask doesn't flow and cure as well, leading to a lower resolution mask.
Apparently clear is the best, followed by green, red and blue.
No soldermask and this:
two thumps up !
I think I'll take a set of boards too.
- I do not need another headphone amp (got an M³, the exstata, a Meier Audio 2Move and soon a jibos-buffer-amp).
- I don't have space to put it somewhere near the rest of my hifi-system
- I don't listen to my Beyerdynamic DT880 much anymore since I have the stax ...
Well, the only reason why I want it is because I love shining tubes and building something.
Just can't hold my hands still - especially during the winter months.