I am thinking of treating myself to a new amp and i know someone selling a Vox AC15TBX, the only problem with the amp is that it whistles for about 30seconds whilst its warming up, as im new to tubes i dont know what the problem could be maybe just a tube needs changing? Anyway the amp is in perfect condition and is £370.

Whats peoples opinion on this amp i like KOL, Guns n Roses, BBking sorta music and im sure that this can handle that and alot lot more.