I thought MXR was done in/around 84, and Dunlop started building in the 90's?
looks like an late original from 1981 just when they added the LED and power jack. Or possibly a very early reissue when they still built them the old way. See my FAQ to date the pots, I can;t quite read them. 137xxyy where xx is year and yy week
I'm glad I stopped by this thread! I picked up a mint condition Dyna Comp off eBay about 10 years ago for $65. I thought it was an early Dunlop because although the pots and jacks are wired to the board, it also has the 1/8" ac jack and LED. I used it at home a few times and then packed it away.
So I dug it out tonight and finally took it apart. After having the foam fall apart all over my desk and having to vacuum it all up, I looked at the pots and they say "1378119" so I guess that means sometime in May 1981. The chip is a "ca3080E RCA 145".
The funny part of it all was that when I finally managed to pry off the bottom plate there was an empty 8-pin socket on the board. Turns out that some foam had stuck to the chip and then to the bottom plate so that when I pulled the plate away from the pedal the chip was stuck to the foam on the plate. I had to pull the chip off the bottom plate and clean it before I could even read the number. Talk about suspense!
I've never looked at the IC in my early Dunlop to see if it is the 3080, I guess I'll have to do that. My only question about yours is why the chip was in a socket, I've never seem a socketed IC on a stock Dunlop. I would think that someone has modded that pedal if it does have a socket.