Bos... (or whomever else might be able to help)

I have an AKG SolidTube that I really like, although in the last week or so, it's become noisy.

When I say "noise", I don't mean buzz or hum, crackling or other familiar signs of problems.

Ok I have a sytek preamp with the burr browns very smooth going to an AKG solidtube mic nice mic it just seems to have a lot of hum could the power supply be going bad?