i just bought a 16 track analog tape recorder.. and i'm trying to find a mixer used somewhere on the internet.

my question is, what should i be looking for in terms of specs. i'm only going to be using it for home recording, i have no need to take it out of my house. I've checked out some mixers and alot of them didn't list any on board effects, which is a must, but do most mixers have effects standard on them or not?