Hey i posted before about this but it died off so i need a fairly quick answer

my valvekings lately been making a large ammount of crackling when its turned on [same with no guitar going in anythign so itsdeff the amp]

Im pretty sure it might be one of the 4 power valves tahts causing it but theres no physical signs of one going out [aka over heating plate etc] and as such i cant tell which one it would be

or could it also be a pre amp tube?

If it is to do with the tubes ill probably get some Winged C 6l6's and tung-sol 12ax7's - soundalright?
Check with Bob at Eurotubes, I bought a set JJ tubes for my Valveking and they work great. They really made the clean tones sound much better than the stock tubes.
Peavey JSX 2x12
ESP Horizon NT-II
Ibz RG3EXQM - EMG 81/89
Ibz RG270 - Dimarzio PAF Pro/Mo' Joe
Dunlop Crybaby
Ibanez DE-7
EHX Small Clone
Boss NS-2