Which model do you own? Does it have a noisy fan?
Used to own. I had about 20 of them. The models were D-75, PS-200, PS-400, and PSA-2. The PSA-2 was the only one that had a built-in fan, but it was a very high quality variable-speed one and wasn't noisy at all.
The newer ones that I've heard weren't noticeably noisy either, but it's definitely something worth checking into before purchasing.