D: I have an Acoustic Control 360 300W head that I bought out of my gay love of Jaco and the fact that it sounds REALLY good! Only problem is that it is really noisy! It is a "Pink Noise" (punchy random static) kinda sound. The volume or EQ of it has no effect on it (however the intensify switch does), and I can overpower it if it is loud enough. But the noise is very noticeable when I am not playing. I tried plugging my bass directly into the master preamp in (on the effects loop in back) and there is no noise at all. So I DEDUCE that it is the preamp. I have already check the fuse, it all matches and the fuse works properly. Also, I do not want to buy a new preamp for these reasons I have a 2 channel effect setup (one dry and one with effects), and I dont' wana pay out the fgkjaf for 2 separate preamps. And I got that amp because of the incredible sound of it! Sorry if this is the wrong fourm or whatever, this is my VERY first post here!