i don't think james used a mark iic+ on sad but true-
i know what he did use... and i had it...and had the EXACT FLAWLESS sad but true tone
...if i told you i'd have to kill you...
ok...fine... i'll tell you- to get the SAD BUT TRUE SOUND
get a Mesa Boogie Triaxis- get a hetfield like tone ( i used to have hetfields actual settings programed in my triaxis)
NOW to get from Hetfield Crunch to Sad But True insanity-
Theres a setting called DYNAMIC VOICE
this is a weird EQ kind of thing somewhat a replacement for the built in EQ like a Mark series boogie...
it also causes controversy in boogie world because it has an op-amp and people think the distortion comes from it rather than the tubes but in reality the op amp only is used in the dynamic voice- it's almost like an EXAGGERATOR for your current EQ settings.
Hetfield sound+ Dynamic Voice on 10= SAD BUT TRUE perfectly
Metallica had triaxiseses before they were released/sold to the public.
AND...
There was something else James used always with the Mark IIC+ and ON ITS OWN Master/Andjustice/Black+
A Mesa Boogie Quad Preamp
I own one- it's amazing.
Sold my triaxis the second i plugged in my quad pre- it's insane.
The Black album was Bob Rock .
I would be willing to bet there are Boogie Mks .Marshall ,Jc120, Ac30 ,Hiwatt on that album.
Bob has an extensive amp collection there is probably a lot more going on then what was put in print in the Mags...
Kirk Hammett: "I used a Bradshaw because the mids were clean and the low end sounded real percussive. The harmonic distortion also sounded nice and dirty. For the highs we used two Marshalls. We combined all the sounds and put the Bradshaw pre-amp through a VHT power-amp. We put it all through Marshall cabinets with 30-watt speakers and blended all the room mikes. My sound is a lot thicker and punchier than before, and I think it's better than ever. For the majority of the leads on this album I used a third ESP guitar. I also used my 1989 black Gibson Les Paul Custom. For the clean sound, I used a '61 stock white Strat [stratocaster] and a Fender blac- face Deluxe. I also used a '53 Gibson ES-295 style, and an ESP Les Paul Junior with EMG pickups."