Your tube get dirty and you think it overheated?

They may even look fine, but you don't get the output you want or need.

Full test of your GU74b tubes.

We can also test and match tubes for you.

HI Pot testing

RF Testing Amplifier

Full documented test report with the return of your tube or tubes.

Discounts for multiple tubes. Call for information.

GU74b Tube Testing

Qty

$35.00