Mystery board

[swrdsrvrsd]

I found this old board i a friend made for me years ago, i have no idea what it is but it sounds very nice, with a good overdrive. Does anyone recognise it? First cap is an 0.047uf and i put a 2n3904 in.

 

[jwin615]

Maybe a LPB 1

 

[swrdsrvrsd]

Maybe a LPB 1

That's what i was thinking. Cheers