Low Gain Silicon Transistors

How would one measure the HFE of each pair in circuit? I measure HFE on an Altas unit but on one transistor at a time.
 
yes... in the Silica fuzz there are two transistors - lower gain - with a trimmer to adjust the HFE.... I am wondering how is this measured to get to the desired HFE?
 
I've been experimenting with piggybacked transistors the last couple days.

2N2369, 2N4123, 3903s (hfe 70-90) etc of course all work in a FF, but I think I am hearing something 'different with mid-gain devices dialed in with piggybacking. Something maybe more complex with the texture, especially in Q1.

But at the same time, I've read on other forums that the very pioneers of this technique (RG Keen, "Brett" ?, and a couple others contributors) lost interest in it once the aforementioned low gain devices were identified.

Have you guys found piggybacking to be something significantly different / useful vs run of the mill low gainers?
 
I have a box of Russian germanium NPN transistors that had too low HFE (40 to 70) for my pedals so they sat there unused. I think I will see what I can get from them in this circuit on the breadboard.
 
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