#1
I'm buying an LTD EC-401 with active EMG pickups, and I heard that they won't sound good on a solid state amp. OR unless it's a more powerful SS amp.

So I need a good amp under $400, and needs to be able to get some good metal tones. Solid State is fine, IF it will sound good with active EMG 81/60 set, or tube amps are ok.
#2
Check out the Jet City JCA20H and the Blackstar HT-5. Vypyr tube (Might not be best with actives but if u try it you might like it). The 2 I mentioned will need probably a small OD or tubescreamer because its hard to find a cheap tube to do metal. Also check ebay, craigslist and local pawn shops for used tube amps.