I recently purchased (and now on my 2nd) Cambridge DVD57RWi from Richer Sounds, and generally am very pleased with the quality of the unit - picture and sound are both superb. One thing that really bothers me is a LOUD 2 tone whine that resonates whilst it is in standby mode. I returned the 1st unit I bought as I thought that it may have been a problem with that particular DVD recorder. The mains plug is a 2 pin which has been inserted into a 3 pin fused adaptor - could this possibly be the source of the problem? Anyone else have a similar tale? If so how did you remedy it? Richer Sounds have suggested putting some 'acoustic matting' on the top to try to curb the noise!