Heh... yeah I gave up on "proper" metal definitions shortly after it got more complicated than "Glam" and "Thrash". I just make up my own names for my stuff (like "Dork Metal" or "Dumpster Core").
I think he was going for whatever Drangonforce and Babymetal are but with an old school vibe carrying it. Lots of classical type movement in it which was interesting to play (since I am not really a classical theory dude).
And yeah... definitely need some half decent speakers to get the full effect. The rhythm guits are actually two distinct parts creating stacked up chords (like Metallica used to do) and both parts were doubled so you want a bit of ball lifting power from the speakers to get the right effect. Lots of wacky doubling and harmonizing in the solos too that may not come through on teeny weeny speakers.
Cheers!