6922? Bad luck!
The dutch made Bugle Boys thrash all current production soundly, even given that yes, glass is porus to (mostly) low molecular weight gasses such as hydrogen and helium - fortunately present in low concentrations.
What will realy stuff tubes is being stored in damp conditions, a little water vapour will reck a tube in a few hundred hours of running.
If you go this way buy tested tubes from a buyer with good and extensive feedback.
They will cost you several arms and legs - which I would spend otherwise on upgrades, unless I had LOTS of money, which I sure don't (even though I still spend heaps on hi-fi!).
Just make sure you enjoy the music!
The dutch made Bugle Boys thrash all current production soundly, even given that yes, glass is porus to (mostly) low molecular weight gasses such as hydrogen and helium - fortunately present in low concentrations.
What will realy stuff tubes is being stored in damp conditions, a little water vapour will reck a tube in a few hundred hours of running.
If you go this way buy tested tubes from a buyer with good and extensive feedback.
They will cost you several arms and legs - which I would spend otherwise on upgrades, unless I had LOTS of money, which I sure don't (even though I still spend heaps on hi-fi!).
Just make sure you enjoy the music!