Pink Face

[alltrax74]

Hello,
Here is a layout I drew about a year ago, widely inspired by the Analogman Sunface. Basically another fuzz face.
I had in mind the sound of Gilmour's time solo which I love.
With the original sunface layout and the Germaniums I used I had terrible results so I tweaked a few values, added a voltage converter to be able to daisy chain it and finally got very happy with it : pretty close (at least to my ears) to the sound I was looking for, no dead notes and cleans very well with the guitar vol pot.
You can hear it here 
The trannies I used are NOS cheap bulky russians I got on ebay with almost no leakage, Hfe 90-120.

The verified layout :

[IvIark]

Nice one buddy

[Muadzin]

Didn't David use silicon fuzz faces at that time?

[alltrax74]

Yes you're right, BC108 FF
http://www.gilmourish.com/?page_id=16

But I had a lot of germaniums so wanted to use them

[pakkee66]

Built it, very nice tone tweak, I used around hfe80 for Q1 140 Q2 first,
the result is not very good, than Q1 up to 120, that's great for me,
end-up the transistors I used is 3AX31B, and test with pair AC128 or IT308B is good also.. thanks for layout mate~ heres my board..

[alltrax74]

Thanks, glad you like it

A pic of mine BTW

[BetterOffShred]

So it sounds good with over 100 hfe AC128's? I got a pair, looks like a fun circuit.

[pakkee66]

very nice box man~ I'll share mine when box done~
cheer

[pakkee66]

yes for my board, the only change my board is the 39nf cap to 33nf that I only have,
of course you can try with your taste.. and mind the Q2 pinout~
cheer~

[tracer03]

Just to be clear - BOTH Transistors should be over 100hFe, or just Q1? Or are there suggested values?

[alltrax74]

Mine is perfect with Q1/90 and Q2/120 but that will depend on the trannies you use.
General rule is Q1 hfe < Q2 hfe, but the opposit could also work...

[tracer03]

alltrax74 wrote

Mine is perfect with Q1/90 and Q2/120 but that will depend on the trannies you use.
General rule is Q1 hfe < Q2 hfe, but the opposit could also work...

That's what I thought, just wanted to confirm there wasn't a 'special formula' for this one. Thanks - gonna try this one out this weekend!