#1
I was just wondering if one valve/tube is broken in an amp, do all of them need replacing? Or just the ones that don't work?
#2
if the new ones are the same as the ones you had, then you can replace only the broken ones.
Otherwise it would **** up the sound.
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Quote by hawk_kst
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#3
You mean broken as is actually breaking in half or shattering, or just stop working? If you break a preamp tube, it's best to replace all the preamp tubes. If you break a poweramp tube, then it's best to replace all the poweramp tubes.
#4
Quote by Kozlic
if the new ones are the same as the ones you had, then you can replace only the broken ones.
Otherwise it would **** up the sound.

not really, preamp tubes you can replace one at a time. Power tubes you really should be replacing them all at once with a set that is matched.
#5
Quote by caraluzzo
You mean broken as is actually breaking in half or shattering, or just stop working? If you break a preamp tube, it's best to replace all the preamp tubes. If you break a poweramp tube, then it's best to replace all the poweramp tubes.


Stop working
#6
Quote by al112987
not really, preamp tubes you can replace one at a time. Power tubes you really should be replacing them all at once with a set that is matched.

This is correct. Not sure what everyone else is thinking. Power tubes, at least new ones, should really be in matched sets and if you break one you need to get an entirely new set.

Two exceptions:
The first is if you think far enough ahead to order, say, a matched quad for an amp that only needs two power tubes. Then if one or two break, you know that the rest you have are matched with the others. You should still rebias, but in that case it's fine to just replace one tube if you know which one's broken.
The second exception is with NOS tubes, but that's another discussion.