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Alembic F1X users. Ever change your tube......

We could hear virtually no difference between the Groove Tubes that were in it vs. Vintage Telefunkens and Mullards.
In blind tests, no one can. Tube rolling between functioning in-spec tubes of the same type is an onanism. And it's infinitely worse in the audio world.
 
In blind tests, no one can. Tube rolling between functioning in-spec tubes of the same type is an onanism. And it's infinitely worse in the audio world.
I think it is more dependent on the devices architecture. The Mesa Walkabout amp does respond to tube changes but it is one of the few I have seen.
 
I think it is more dependent on the devices architecture.
To some extent, though it is far, far smaller than most tube rollers would suggest. I've designed and built a lot of tube amps, and repaired/modified even more.

No.
Why bother?

Consider your bass is heard out front as a mix with the band.
Consider your speakers are not full range, nor particularly articulate.
Bingo. Even in studio it will be exceptionally difficult to tell.
 
My unit is silent. I turn on my amp and hear a pop in my speaks so pretty sure my chain is working. But there is zero output to inputs, no noise plugging in, or anything. I think my tube might be toast since I was turning on and off my preamp a bunch while testing my amp, which also had issues but a tech fixed that it was a huge thing that took 90 days :D

Anyways. I'm completely terrified of pulling my tube. I can't find clear instructions on whether the metal tube can be removed... if so, how?
My tube has a faint glow but the unit looks pretty clean otherwise. I've watched a bunch of tube removed videos, but this unit seems unique and I'm just kinda terrified of breaking it lmao. I live in the cut, so taking it to a shop is like 2 days of driving, which I'd like to avoid.

A long time lurker on this website finally made an account.
Thanks!
 

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If the tube doesn’t fix it, go back to your tech. The more you screw with it, the less likely your tech will accommodate any warranty they might have on it.
 
If the tube doesn’t fix it, go back to your tech. The more you screw with it, the less likely your tech will accommodate any warranty they might have on it.
Yeah, I have no tech. :D
I'm trying to get my rig stood up.... I haven't played electric in a really long time. Anyways, I'm fairly tech savvy but haven't messed with tubes before. I've read that the metal ring that collapses is removable, and isn't so I'm trying to avoid figuring it out on my own until I get validation.
 
Yeah, I have no tech. :D
I'm trying to get my rig stood up.... I haven't played electric in a really long time. Anyways, I'm fairly tech savvy but haven't messed with tubes before. I've read that the metal ring that collapses is removable, and isn't so I'm trying to avoid figuring it out on my own until I get validation.
I thought that you had a tech that already fixed it???

Since you are terrified of changing the tube (not sure how this makes you tech-savvy) , maybe it's time to find a qualified tech then... and we have thing thing called shipping that can help you avoid a long drive.
 
Anyways. I'm completely terrified of pulling my tube. I can't find clear instructions on whether the metal tube can be removed... if so, how?
From earlier in this thread.
So, the tube sleeve is in two pieces. The top half slides down into the bottom half. I just did it,....and whadaya know! pfft, it worked.


I don't actually have experience with this preamp, but the tube shield looks pretty much the same as the tube shields in my 69 SVT, which work exactly the same way.

Not my amp but same tube shields.
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