[sdiy] Tube amplifier question

[Jay]

on 8/11/04 10:59 PM, Roy J. Tellason at rtellason at blazenet.net wrote:

> Yet in doing organ work I've seen tubes that were 30 years old or more,  and
> were either only slightly weak or just fine,  which always amazed me.

I've played a Conn tube generator church organ from the 50's that is still
used in regular services that has only had 4 tubes changed (according to the
service record) since new. Guess the new manufacture stuff must be junk?