Folks ... I am looking for a pair of 572B tubes for my SB-200. Has anyone an extra set ?? 73, Barry Anderson K3SUI Frederick, MD banderso@eni.net -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.contesting.com/km9p/search.htm