300b break in (Takatsui) newbie question

Tubes Asylum

Questions about tubes and gear that glows. FAQ

My new Takatsui tubes arrived and I'm pretty sure they don't sound great. Brittle, not nearly as liquid as the Western Electric (new stock) that I swapped out. I listened for ten minutes and swapped them back and confirmed that the WE tubes sound significantly better in my system.

Some writing online talks about 150 hours of break in. Really? What's happening when a tube is breaking in? How is it that breaking it in makes it sound better, not worse?

As a lapsed mechanical engineer, I feel clueless about this and I'm wondering about nocebos, placebos and whether I'm underinformed.

Thanks.

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Topic - 300b break in (Takatsui) newbie question - sethgodin 18:40:41 01/27/23 (6)

RE: 300b break in (Takatsui) newbie question - Brandtacious 11:03:52 01/31/23 (1)

RE: 300b break in (Takatsui) newbie question - Brandtacious 11:17:03 01/31/23 (0)

RE: 300b break in (Takatsui) newbie question - Joe Backer 14:26:49 01/30/23 (0)

You may simply prefer WE300B sound.. - Jon L 14:43:02 01/28/23 (0)

RE: 300b break in (Takatsui) newbie question - RPMac 05:49:27 01/28/23 (1)

How do you like them compared to WE reissue? - John PA 19:40:14 01/28/23 (0)

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