Gain/voice mods for silver EL34 Shiva

Hi folks,
I'm looking for help with possible gain/voice mods for a silver chassis EL34 Shiva.
Like some folks, I think the Shiva is awesome, but if I could just get 'a bit more'
I've been googling and searching forums and have gotten bits and pieces, but could use some help with details on how to apply them to the silver Shiva.
I'm working off this schematic snippet I found, seems a bit odd, but maybe good enough for reference
http://spinoo.free.fr/sloclone/Shiva preamp.png

I've come across mods to preamp tube bias resistor/bypass cap - what I believe are called the Cantrell or Cameron mods?? - but they're for the Ecstasy
https://web.archive.org/web/2009042...0 ... dt967.html
I don't know which gain stage and what values work for the Shiva.

I also saw jumping R21, the 470k resistor between V2 and V3 to send a ~2x hotter signal into V3.

Any help would be greatly appreciated!
Thanks!
Matt

Get a hold of BrentSP

BrentSP":4t0fwvzm said:

GOHOINC":4t0fwvzm said:

What exactly is this cantrell mod on your shiva?

Click to expand...

It's a 3 way mod that gives you the choice of stock shiva, + and ++. ++ is gainer and more open, fluid, easier to play and not so congested sounding, spec wise it's similar to the XTC classic but more aggressive. + setting is the same thing just less of everything ++ does. Sits in the middle between stock and ++. In either of the 2 settings it's brighter, gainier and more aggressive. Sounds really good with lower gain settings also.

Also the bright switch is shifted to boost highs and mids unlike the stock bright switch that is very subtle and boost highs.

Here is a stock/modded comparison vid of it.

Click to expand...

I can't yet use PM here, but yes hoping BrentSP can help!
Thanks,
Matt

Is BrentSP around?
I guess I'll try posting more until I can send PMs...
In the meantime, any other help would be appreciated!
Thanks,
Matt

You might want to try posting a thread or having the mods move this one to the Rig-Talk section. He might notice it more up there...