For Death/heavy metal to sound good with tube amplification, look for higher efficiency speakers (90db or greater) with impedance ratings that do not dip much below 8 ohms.
BTW, I think your speaker choices will be limited by going with a tube amp. Mismatch amp and speakers and that music will likely drive you out of the room. Do it right, and you should be in for some nice head-banging!
I'd consider the option of a good Class D amp that is designed to work well with the tube pre-amp. Wyred 4 Sound would be a good place to start. Look for a SS amp with 50K or higher input impedance for the low end response you want for that music with a tube pre-amp.
If you go the Class D amp route, I would consider OHM Walsh speakers matched to your room size. A good SS Class D (Icepower) amp will drive almost any speaker out there today very well however!
BTW, I think your speaker choices will be limited by going with a tube amp. Mismatch amp and speakers and that music will likely drive you out of the room. Do it right, and you should be in for some nice head-banging!
I'd consider the option of a good Class D amp that is designed to work well with the tube pre-amp. Wyred 4 Sound would be a good place to start. Look for a SS amp with 50K or higher input impedance for the low end response you want for that music with a tube pre-amp.
If you go the Class D amp route, I would consider OHM Walsh speakers matched to your room size. A good SS Class D (Icepower) amp will drive almost any speaker out there today very well however!