Recommend a tube testing machine!
Feb 12, 2016 at 11:38 AM Post #16 of 16
I have the Amplitrex AT-1000, yes it was hard for me to swallow @2500 but trust me bu it paid for itself. There are sellers claiming "NOS" tube but eventually tested out bad/reject. If I don't have the tester with me, I will say I've been paying extra 3-4K easily w/o knowing the true condition
 
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