Members Ryan F Posted July 5, 2006 Members Share Posted July 5, 2006 17 years, give or take a bit. Peavey VTM120, bought used with stock tubes about 3 months ago, havent had much time to use it so I havent ordered tubes till now. Link to comment Share on other sites More sharing options...
Members soc_monki Posted July 5, 2006 Members Share Posted July 5, 2006 Originally posted by 2B ...I do not agree.I've run my amps hard (SLO's and old Marshalls), they do NOT need any tube-change every six months. As long as they sounds great, no need for a tube change.(2 - 3 years really, on the same tubes, still going strong..). Some class A amps "eat" tubes, and they might need a tubechange every six-months or within a year....IMO it depends on the amp.Torbj Link to comment Share on other sites More sharing options...
Members Megadeth7684 Posted July 5, 2006 Members Share Posted July 5, 2006 5150 - No idea, probably ancient. JCM 900 SL-X - A month or two. Link to comment Share on other sites More sharing options...
Members maidenrules666 Posted July 5, 2006 Members Share Posted July 5, 2006 my vtm still has the stock tubes and its from the late 80s/early 90s Link to comment Share on other sites More sharing options...
Members anti-flag193 Posted July 5, 2006 Members Share Posted July 5, 2006 My jcm 800 2203x had the stock marshall el34's when I bought it in march of 2005 and they're still in there doing fine. I'm gunna put some Ruby el34bstr's in though just for a change. My 5150 has had the same jj6l6's in there for about a year and a half, but I harly ever play it so they'll last a long time. The laney GH100L I just got has had the powertubes in there for about a year they said, but I'm gunna change then out for el34's I think. I usually just use the tubes until I can tell it sounds like {censored}. Link to comment Share on other sites More sharing options...
Members gizzi Posted July 5, 2006 Members Share Posted July 5, 2006 the powertubes in my engl fireball are about 4 months old. two of the JJ pre's i have in there are about 3 months, and i recently put two 1957 RCA 12ax7's in there...i have no idea how many hours are on those, but they still sound killer. Link to comment Share on other sites More sharing options...
Members gafyagaton Posted July 6, 2006 Members Share Posted July 6, 2006 um. i dunno. when were kmd heads made? Link to comment Share on other sites More sharing options...
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