is a 3cpx800a7 the same tube as the 3cx800a7 (difference being the "p"). and can 3cpx800a7 be a replacement for the 3cx800a7 in my titan amp? thanks....Steve -- 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