John, >I think you mean *UV22* on the Apogee redithering. >Thanks for an informative post! > >jh Oops. Yes, of course, you're right. The redither switch on the AD100 is actually labeled "UV16" but Apogee's well known algorithm is called "UV22 Super CD Encoding". Thanks for pointing that out. Gilles St-Laurent Music Division National Library of Canada