https://youtu.be/eQFdP6PaKTk
I've always wondered how Sabbath got that
sound. Brian May, etc. Something called a "treble booster" would have been the
last thing I would've imagined or guessed. But fuck me all to hell, that's it!
This guy making the video is so amazingly passionate about music, and passionate about exactly how those sounds are gotten. He's like an encyclopedia. He covers all the bases and he's got the shit nailed like nobody else.