Tube microphonics

@carlsbad2   Kinda both. Because I really don’t want to move those amps with the full sets of tubes already in them. Don’t want anything happening to the tubes by a bump or so. I already had one tube arc on me the first time I tried my amps when they got delivered. And it took out a resistor and fuse also. Don’t want that to happen again.    @jetter That sounds like a good idea. I will definitely try it. And yes. I did carry them upstairs but like u said there were no tubes in them. @ghdprentice Right. They don’t have rubber dampers for the KT150s. 

@tattooedtrackman So just test for microphonics in all your tubes as I described.

Maybe. I’ve only rarely heard any tubes acting microphonics in power amps, and only for very old NOS tubes in the V1 / input slots. Amps are very far downstream in the gain structure, so microphonics are rarely an issue. Tube preamps and phono stages are a different story.

Anyways, I’ve had a few different tube power amps right besides my speakers. Never in front, but I’ve had them on bare floor, spikes, hockey pucks, isolation feet and even expensive $3K isolation shelves. Never heard that much difference from the isolation, sorry. I play loud too. Swapping the AMPS themselves, however, is always a hugely audible difference.

Update on tube dampers for KT150s. Herbie’s does make tube dampers for KT150s. They are $54 ea. So I will need a total of 16 x 2. Power output. And 2 x 2 drivers. For a total of 36 KT150s. -$1944 

IMO tube dampers on power tubes will have no effect unless you’re doing it for the look. Never had a power tube be microphonic in the slightest. I’ve also never had any damper solve a microphonic tube issue in a preamp -- the solution in that case is a new tube, or a different preamp with lower gain.