that clip owns! the einstein does seem to get a lot better as it gets louder. YU've just about nailed metallica with a lil combo : :)
Thanks, well "nailed Metallica" would require minimum doubled tracks per guitar, also maybe less mids and ehem, some practise ... but I liked the way it felt to play with this a bit less tight setting.
By the way, it is not the combo. Combo is 50W, has reverb and a slightly different voicing. I own the 100W head (more fun as you can mix pairs of different power tubes) and play it through a ported 2x12.
Diezels are quite special and not as easy to dial in as other amps, the EQ is very extreme (compared to a Marshall or also my Bogner, which are more subtle). You should give the amp a try if you can.
I compared it to many other amps in the shop (Marshall VM, Orange RV, HOOK, Mesa, Soldano Avenger). I preferred the Avengers lead sound, but it lacked the loop and channel switching options of the Diezel.