Anybody read this interview with Tony Iommi?
Treble-trouble
What other key pieces of gear did you use back then?
"When I lived in Cumberland, when we did the Mythology thing [Iommi's earlier band], there was a guy up there and I used to use his treble booster called a [Dallas] Rangemaster to give my sound a bit more 'oomph'. A guy from another band up there said, 'I can make that sound better for you'. So he took it off me and brought it back the next day. I don't know what he did to it, but it was really good. I used that treble booster on all the early Sabbath albums and put it into the Laney because it boosted the input and gave it the overdrive I was looking for, which amps in the early days didn't have.
"I used that treble booster up until 1979 when I had a guy come in to build me some Marshalls. They gave me a whole stack of Marshalls and this guy came in and rebuilt them. In the meantime, while he was building these things, he threw my treble booster away. I didn't know until it came to the time when I was looking for it and he said, 'Oh that? I threw it away. It was crap'. I couldn't believe it. I've never seen it from that day on and my amps didn't sound right without it."
http://www.musicradar.com/us/totalguita ... ath-310167