Can a tube become magnetic with use?

Tubes Asylum

Questions about tubes and gear that glows. FAQ

Now I understand that components that become magnetic when the circuit is live is bad for audio. Can a tube become magnetic during use? The reason for my enquiry is that I use an industrial demagnetiser as part of my business. I thought I'd pass some Seimens 6922 gold pins through it, & the buggers were magnetic. I demagnetised them & popped them back in my amp & had a listen. It may be placebo but I noticed better soundstage & instrument placement. Anyone that has these tubes knows how clear & precise these sound.
A thought that crossed my mind is a magnetised tube more likely to become microphonic?

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Topic - Can a tube become magnetic with use? - Aurum 21:09:33 04/28/07 (9)

Why should it matter? - dadbar 16:49:22 04/29/07 (0)

The Placebo Effect - nightdoggy 12:05:36 04/29/07 (0)

Re: Can a tube become magnetic with use? - Michael Samra 23:38:40 04/28/07 (6)

Re: Can a tube become magnetic with use? - Aurum 03:02:03 04/29/07 (1)

microphonic tubes - unclestu52 12:51:13 04/29/07 (0)

Actually - unclestu52 03:01:35 04/29/07 (3)

Beam deflection - Jim Hagerman 22:30:58 04/30/07 (1)

Re: Beam deflection - Alpha Al 06:20:52 05/01/07 (0)

Re: Actually - Aurum 03:10:34 04/29/07 (0)

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