Pre-amp valve of a Marshall Mini Jubilee

[Marco m]

Hi,
I just received a Marshall Mini Jubilee 2525h. It's the first time that I get a tube amp.

I see that one of the 3 preamp tubes is covered by something that looks like "a guitar slide". So I can't see if it lights up or not. How do I know if this tube is fine?
From the sound I can't say because as I said, this is my first tube amp.

Thank you!!

 

[fitz]

Hi,
I just received a Marshall Mini Jubilee 2525h. It's the first time that I get a tube amp.

I see that one of the 3 preamp tubes is covered by something that looks like "a guitar slide". So I can't see if it lights up or not. How do I know if this tube is fine?
From the sound I can't say because as I said, this is my first tube amp.

Thank you!!

& HNAD
Welcome - and happy new Marshall amp day!

That's an interference shield on the V1 (first) tube.
Keeps out unwanted external signals from getting amplified through the signal chain.
It comes off with a simple twist if you want to see the tube or if you need to change it.

 

[Marco m]

& HNAD
Welcome - and happy new Marshall amp day!

That's an interference shield on the V1 (first) tube.
Keeps out unwanted external signals from getting amplified through the signal chain.
It comes off with a simple twist if you want to see the tube or if you need to change it.

Thank you
So it means that if I don't hear any weird noise everything should be fine, right?

 

[fitz]

Thank you
So it means that if I don't hear any weird noise everything should be fine, right?

Crank it up!
If all of your pets hide, and the windows start rattling, it's probably working right.

 

[Old Punker]

Crank it up!
If all of your pets hide, and the windows start rattling, it's probably working right.

"If all of your pets hide, and the windows start rattling"

This is known as the Marshall Effect

and Congrats!

 

[Jethro Rocker]

Yes if it works that tube is fine. Don't worry too much about the tubes, just play it! Great little amp!