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Schiit Lyr Tube Burn Marks

post #1 of 2
Thread Starter 

I was using my Schiit Lyr today and noticed some burn marks on the tubes I am using. They are the stock GE 6BZ7.

 

 

Is this normal? I read elsewhere that this could be a faulty driver tube or that it is absorbing oxygen that is inside the tube causing the top to darken.

 

What should I do?

post #2 of 2

look normal, usual discolouration of getter with initial usage. I would carry on as usual and not worry about this. Some tubes are even 'burned in' like as new by the supplier  [a great way to get low prices on 12SX7GTs ;)].

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