Hey all, picked up this preamp last week. Came to me with a pretty bad crackle/hiss. Haven't sorted that out yet, but I did up a schematic.
I verified the transistor pinouts and gain with a DCA55.
Diodes are 1N7xx, forward voltage is 0.78V.
Enjoy and feel free to ask questions.
More pics here.
bb1330-1-3.JPG
drawings.jpg
1330-1 schematic.jpg