Those clips where not to my taste personally. Just sounded like some generic modern extreme hi gain amp. I guess it's good that an MP1 classic can be used in that way, mind you there was so much other shit going on there, who knows what the Classic was actually contributing.
I am familiar with an OD boost as I do it myself SC, but I'm particularly keen to hear if anyone has used something like a Dallas Rangemaster or any other "Trebel Boost". Why? Because I understand a trebel boost is actually not just the same as having an EQ setup to boost the same frequencies and placing that in front of an amp. As far as I'm aware it almost adds a fuzz or gritty to the sound as well as boosting said frequencies.
Ultimately I'm just curious as I know Judas Priest used a rangemaster into Plexi's in the early years and also into JCM800's until 1986