Comparing Tube Driver schematics and about DC powering

[shredgd]

Hi,
I'm planning to build a Chandler Tube Driver and I found three schematics. I found one at General Guitar Gadgets (http://www.generalguitargadgets.com/v2/diagrams/tube_driver_sc.gif), one from John Greene at http://amps.zugster.net/articles/tube-pedals/BKButlerTubeDriver.gif  and one at http://members.chello.at/anubics/html/schematics/Chandler_TubeDriver.gif.
The only difference between the first two is the value of two caps in the tone stack (0.47u each in the GGG schematic, 0.047u each in John Greene's), which may be a typing error in one of the two (in any case, which value is correct?). I think John Greene's schematic is the one used by the majority of the ones who have already built this pedal.
On the contrary, the third schematic (which is very new) contains various differences with the first two, even if the basic layout is the same. It says to be traced from a pedal of which the original serial number and PCB number are given. As it also differs from the other two in the power supply section, I'm wondering if the noise issues I read about in a previous thread (http://www.diystompboxes.com/sboxforum/viewtopic.php?t=12005&highlight=chandler) may be due to some "lacks" in the older schematics.
Basically I'm asking you which of the schematic I'd better follow.

My second question is about the possibility of DC powering, which I read in the thread I mentioned above.
I read I would need 30v DC and a voltage divider to feed the IC with, but I didn't understand well how much voltage I would need to feed the heaters with. In any case, are these mods the only ones I would need? Would it work?

Thank you very much in advance,

Giulio

[theApple]

hey dude I'm trying to build one too hows yours going so far if you've already started
some of the reasons for the differences in the schematics may be due to the fact that during some point in time chandler changed the design of the tube driver probably to reduce costs anyway these altered tube drivers are seen as being inferior to the original the creator b.k.butler talks about this in an interview on this site http://www.tonefromheaven.com/
the tube driver design was then changed again after b.k.butler reclaimed the rights and distributed it through his own company butler audio this new design is seen as the best (according to him) as it uses higher quality components (according to him) he also discuses this new design briefly in the above link anyway if you believe this to be true id probably say to use the http://amps.zugster.net/articles/tube-pedals/BKButlerTubeDriver.gif link out of the 3 links due to it referring to the pedal as butlers rather then chandlers

[johngreene]

The one I traced was a BK Butler Tube Driver. The earliest model, not the later models made by Chandler. But that was quite a while ago so don't ask me to remember any details!

--john