Found it folks!!! I searched Audio Asylum and a few early BC22 owners were having a problem with a noisy transformer (Hum). The poster Gary Lester sais Blue Circle mailed him a new power cord with a filter on it that solved the hum and improved the sound. The new BC22 do not have this problem. It shows Blue Circle stands behind their products.
The link is:
http://www.audioasylum.com/audio/general/messages/128675.html
The link is:
http://www.audioasylum.com/audio/general/messages/128675.html