Tungstengruvsten
Well-known member
I've got a bunch of old 5 channel VCA cards built around these, no docs, no info, rest of the circuit is 99% SMD so they aren't ancient but difficult as hell to trace....and the similarity to the 2180LC part number isn't lost on me - I see one old thread on GDIY with no info, just trying to see if it's worth keeping these or tossing the lot(50 cards/250 VCA's in total)