Does anybody know what this circuit is for?

[lauritz]

Hi

Got this circuit pcb with a big load of electronics stuff. The pcb seems to be from the same manufacturer as a 4 channel ssl 9k clone that also came with the lot.

The transistors are bd139, bd140 and K170.

Any thoughts on this?

I can post more pics if necessary

thanks
Lauritz

 

[analogguru]

It's a line-driver (maybe for a DI-Box).

 

[lauritz]

Cool. Thanks for the help! I guess maybe it could have been for a Hi-z input for the 9k mic pre then