And Go…I haven’t yet how about you?
I wondered how long it would take…
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I’m thinking of trying the PSvane 12au7
What did yours come with? I thought Psvanes was the stock valve.
I didn’t know that…so I am good to go lol
I switched out the Psvanes on my M1200 with Brimar CV 4003 NOS tubes. Getting the tubes in and out is a little challenging. Using the PSA tube puller helps a lot. I only have a couple hours on them so I don’t want to judge the sound yet. Most notible right away is the Brimars are not as bright on the high end as The stock tubes. I will update after some more hours have been logged.
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How has the listening been with the Brimar tubes?
I didn’t care for the Brimar’s in the M1200’s so I switched to the Gold Lions and I wonder why PS Audio doesn’t ship the M1200’s with the Gold Lions! They are great with the M1200’s! IMO
Welcome to the community by the way!
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Thank you for the insight. I’ll try the gold lions!
The Gold Lions are friendlier on the budget also!
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And far better quality than the overpriced Psvanes
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Are you enjoying listening to the M1200’s? I can’t say I have any regrets! I loved my 700’s but the 1200’s are better!
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Yes, once broken in the M1200 sounds great. I’m enjoying it.
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Replaced the stock PSvanes with the Gold Lion 12AU7 ECC82. Very nice upgrade.
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Good choice!
I have the Gold Lion 6922s ready to go into the BHK and M1200s when the stock PSVane tubes start to get sleepy.
I didn’t wait for the tubes to age. The sonic improvement the Gold Lions provide over the Psvanes will make you wish you replaced them sooner!
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Pus, you can try them out and, if you like, put the stock ones back and wait for them to slowly die. 
The other nice thing is tubes are typically pretty affordable as an upgrade/modification.
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I like the sound of PSVANE 12AU7-S better in M1200. The Gold Lion sounded better in voices and mid range, but the S sounded fuller in my system.