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John
John, Engineer and electronic enthusiast for more than 12 years.
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I have a tube headphone amp. I put it together, and plugged

Customer Question

I have a tube headphone amp. I put it together, and plugged it in. All I get is a drumbeat thump, and the red led just flashes..Any ideas?
Submitted: 1 year ago.
Category: Consumer Electronics
Expert:  Neil replied 1 year ago.

Hi

Did this use to work and has stopped or are you trying it for the first time?

Customer: replied 1 year ago.
First time
Customer: replied 1 year ago.
Is it tube burning in?
Expert:  Neil replied 1 year ago.

I am not convinced the tube isn't just a gimmick...

But make sure it is firmly seated and it should warm up within 20 seconds or so...

Expert:  Neil replied 1 year ago.

What device are you connecting are are you sure it works?

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