How to handle infant mortality of Svet 6550C?


Purchased from Vintage Electron,one tube died,out of an octet purchased for my ARC VS110.Tubes were used by me for a total of 4 hours,bias checked metculously after every hour after warmup with no signal.
The dead tube took a resistor with it(hopefully not more-remains to be seen).
My question is:What kind of refund/compensation is in order here:Can I return all 8 tubes?Who is responsible,etc.?
Thanks,Raanan
reylon

Showing 1 response by weiserb

Vendor should replace the tube and maybe retest the others. I use Upscale audio and have had great results. I know UA does very extensive testing.