Wizard of Ozz
Arch-Mage of Metal
No idea on the Presence knob but the Blackmore / Artist Edition heads this is derived from don't have a depth knob either.
Probably why neither of those are among my fav Engls. But the lack of either a presence or depth knob is pretty odd to me. High-end, low-end... a means to control them... pretty useful.
That plus the cosmetics look like a Realistic Radio Shack 8-track tape player from 1979.
![Nuts :nuts: :nuts:](http://www.sevenstring.org/styles/default/xenforo/smilies/nuts.gif)
![noplease :noplease: :noplease:](http://www.sevenstring.org/styles/default/xenforo/smilies/noplease.gif)
![Rant :rant: :rant:](http://www.sevenstring.org/styles/default/xenforo/smilies/rant.gif)