How would the BC109 transistor sound on a Pleiades V6 single ended input, output transformer one active device schematic?

BC109 microphone booster?


The BC109 is the low noise transistor used in the EMI TG12345 multiway mixer or the Uher report 4200 portable broadcasting reel to reel magnetic recorder.


What would be an optimum operating voltage. Small, large? Operating current? Small, μA order like electron tube battery circuits?