I had one of those connected to a R-390A and used a tube Sherwood amp, great sound and a great product detector! Les Locklear In a message dated 11/22/2004 12:25:44 PM Central Standard Time, N4BUQ at aol.com writes: ...and the little PD-1 solid-state unit. I have one and it works pretty good. Barry(III) - N4BUQ