Depends upon how hard you shook them to elicit the sound you hear. Don't forget those octal triodes have a large glass envelope with substantial metal and mica structures inside. I do believe that if you shake such tubes GENTLY, you might hear that sound. And I also believe that if you shake them vigorously, there is a good chance you could cause the damage that would lead to that sound of a broken light bulb. So, if you can honestly say you didn't shake them vigorously, why not give the tubes a chance to see if they work OK? You might be fine.
Tubes sound like a broken lightbulb
So I just bought some pretty fancy NOS tubes from a big online store. I unpacked them and notice they sound like a broken lightbulb 💡 when I handle them. Is this normal? I paid a lot for these tubes Because they were promised to be and test as brand new.
the tubes are Slyvania Jan-chs 6sN7gt / VT-231 2 rivet “bad boy” tubes
thanks for the feedback
the tubes are Slyvania Jan-chs 6sN7gt / VT-231 2 rivet “bad boy” tubes
thanks for the feedback