Which of these Tonebender schematics is similar to Fulltone's Soulbender?

[Burstbucker]

Is this the same version of the Colorsound Tonebender that Fulltone fashioned his "Soulbender" from?
http://www.geofex.com/FX_images/tbndrsch.gif

Or would it be this one?
http://www.freeinfosociety.com/electronics/schemview.php?id=316

Probably not this one?
http://www.generalguitargadgets.com/diagrams/tonebender_m2p_sc_pp.gif

I'll bet that it's this one, yes?
http://www.generalguitargadgets.com/diagrams/tb3bb_sc.gif

Fuller describes his Soulbender as follows:
"Our Soul-Bender is based on the legendary Colorsound and Vox Series III ToneBenders made by Sola-Sound/England in the late '60's that was used by Beck and Page on much of their circa 1968-70 recordings.  Equipped with 3 gain-matched germanium transistor for a FAT, searing lead tone."

Which schematic is the right one?

[Moonface]

The boutique bender. I have built it with 3x OC75 trannies.

[Burstbucker]

Moonface:
I kinda suspected that it was the Boutique Bender, so thanks for clearing that up for me.

What's the deal on these OC75s?  I take it that those are NOS Mullard transistors similar to the OC44s?  Are those OC75s the same type that were used in the original Tonebenders?  Are they hard to find and are they expensive?

Small Bear has a set of matched NOS Germanium transistors for building your own Tonebender, I wonder if these transistors would work as good as those OC75s?

[Chuck]

Good question, I'm wondering myself.

[JHS]

In a Rangemaster the OC44 is a bit clearer, harder sounding, the OC75/76 sounds a bit darker, warmer.
I don't thinks you would hear the difference in a soulbender-fuzz.
I use AC151 for most fuzzboxes, they are cheap in the local shop and sound very good.

JHS

[Moonface]

What's the deal on these OC75s?  I take it that those are NOS Mullard transistors similar to the OC44s?  Are those OC75s the same type that were used in the original Tonebenders?  Are they hard to find and are they expensive?

Small Bear has a set of matched NOS Germanium transistors for building your own Tonebender, I wonder if these transistors would work as good as those OC75s?

You can get lots of OC75 from Britain's Ebay. Yes, they are Mullards. They are darker- sounding than OC44. OC75 was used in TB's. They are harder to get than OC44. Same price, even cheaper. Bear transistors would be good.

[ulysses]

i think i saw a perf layout for the fulltone soulbender here on this board a while ago..

cheers
ulysses