I want some new tubes for my Blackstar HT-5 head. The ones it came with aren't very good apparently (cheap 12BH7 and pre amp: ECC83). Apparently the HT-5 has a 'Self biasing' system so I think I can use anything, not sure though. I want to know what tubes are best for metal sounds, mainly Metallica and Iron maiden. I usually play it with the volume at about 12 o'clock or more. Any suggestions? This may be a very VERY stupid question to ask but I don't know much about amps!

Thanks alot
Have a look in the HT5 thread, Theres gonna be a lot of reading to do but theres shit loads of tube swapping gone on in there
I shouldn't post when drunk..

15 Jackson SLATHX-m 3-7 Slime green
Squier std tele (modded to hell)

Engl Powerball
Laney Ironheart 60h
Zilla Superfatboy 2x12 v30's

The gold pin JJ's are really good....
Playing on some new gear....review to follow
Ah right I will check the JJ's out. What about power tubes any suggestions? Remember I nee them for a good Metal sound
EHX makes a good 12BH7 but if you want a really nice power tube go find a RCA 12BH7 or a Sylvania 12BH7. They are probably the best sounding and most musical but if you want something quick and cheap EHX will be alright. For tubes get a Ruby 12AX7AC5 HG+. Very high gain tube with a very low noise floor, this tube will give a bit more gain out than other tubes.
Ibanez UV777P
Ibanez RGD2127FX
Ibanez RG3120TW
Ibanez RGD7321
Ibanez RG6003FM
Ibanez SA160
Jackson Slatxmg3-7
Baron Custom Amps K88
Rivera Knucklehead TRE
Fryette Sig: X
Randall RM4 /w Modded modules
Mesa 4x12
Bogner 4x12
Peavey 4x12(K85s)