Sounds close to a broken shield/ground between the card and the I/O box - but that's a guess. If you move the box around while recording, what happens? Cheers, Richard At 01:59 AM 9/16/2005, you wrote: >Dear Rod, Mike, Lou, Richard, Joe, etc. > >Thank you very much for your advice! > >I've disconnected the monitor and recorded "silence", but the buzz >(like a shaver) was still present. I've removed the I/O box from >the PC case and everything sounded much better. One thinks of >upgrading one's system (in need of speed) just to encounter new >problems slowing you down again! Richard L. Hess email: [log in to unmask] Vignettes Media web: http://www.richardhess.com/tape/ Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX Detailed contact information: http://www.richardhess.com/tape/contact.htm