In a message dated 2/12/2006 4:17:53 P.M. Pacific Standard Time, [log in to unmask] writes: Duplicators were designed to work at the higher frequencies. the dialogue I raised has been very useful. Your responses have been fabulous. What are the best duplicating machines or the ones that have been most successful or the one's easiest to acquire? Continued thank you David Hoffman _www.thehoffmancollection.com_ (http://www.thehoffmancollection.com)