Datasheet for AC128/ Germanium Transistors in Fuzz Face

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Hi there, this is my first post so apologies if its not in the correct place!

I'm a final year undergrad student studying Electronics with Music and need to locate a datasheet of an AC128 Transistor or similar germanium transistors used in a Fuzz Face distrotion pedal. I see that some people have posted spice models for this, however it would be great if there were some characteristic graphs that I could compare this to.

I'm quite new to all of this, so any tips would be greatly appreciated.

Cheers.
 
This transistor was used in audio amps 40+ years ago and should only be used in antique equipment repairs.
If you are building a new unit: find a mdern circuit!

It's for a vintage FuzzFace distortion pedal for guitar. The idea is to build them as close as possible to the originals, which means using germanium transistors which are arguably what gives it its distinctive sound. Using modern silicon transistors don't achieve the same result.

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