Brook 10C3 Preamp
This preamp would have been used with the 10C or 12A Brook amplifiers. It has several 6SJ7 tubes. Constuction is interesting. I am glad the only thing wrong with it was a barely connected input wire in the umbillical cord. A quick easy fix.
The different inputs allow for different gains. I'll need to consult the manual.
Beautiful construction. Lots of parts in a small area.
There wasn't much wrong with this unit as Modafferi worked on this in 1993.