Actually, the bass sound (of course before it was rerecorded at the behest of spouses Osbourne) is the one think I always liked about the production. Unusually middish and barky for a heavy metal recording where basses are regularly relegated to rumbling sublows and audible treble attack with nothing in between to make room for the guitars.
I saw Randy Rhoads in concert with Ozzy in the early eighties. Forgive me, but I thought he was sloppy at the time. I liked Jake E. Lee - a tasteful player - much more.
Uwe