10--Perfect, rivals legit
release
9--Excellent, very minor hiss
8--Excellent-, some hiss & very minor tape flaws
7--Very Good, hiss, some tape flaws, minor crowd
noise
6--Good, hiss, some distortion, distant, tape flaws,
crowd noise
5--Fair, same as above but worse
4 & below--for the colletor only varying degrees of everything. Tapes are listenable, but barely.