Hi, I recently purchased the WA6 and it was as quit as could be for the first few days…then I noticed the amp was humming/buzzing, (not through the headphones, they are dead silent), so I let Woo know, and I was told it could be AC/RF interference. So last night when I turned it on I could hear it from 3 feet away and it was consistent the whole time it was on, about 2hrs. So tonight I took the amp out of my system and plugged it into 3 different AC outlets with nothing connected/near it, and it immediately started to hum/buzz, and it sounds like it is coming from the transformer on top. I don't believe this should be, does anyone have this issue with their WA6, or other Woo amps? Thanks.
BTW, I'm asking before I contact Woo again, I would just like to hear what other owners have experienced, like I said I don't believe this should be!
My WA6 hummed just like yours when I first got it in 2009. I could hear it from a foot away. A friend suggested that I open the top of the transformer box and tighten the screw to the transformer and only if I knew what I was doing. So I didn't do anything. The hum got louder and softer depending on the rectifier I used. It still hums but I just ignore it. It doesn't bother me anymore after owning it for almost 4 years.