You've answered your own question..First ,stay away from Cryoset..( had a similar issue with Tube Depot )and also buy now you probably realize for the price you pay,the cryo tube rage has slowed to a crawl..Cost vs. Value doesn't cut it....Lesson learned......
Cryoset Tubes Issue
For those who purchase from http://www.cryoset.com/, pls share your experience.
I recently put an order of 16 cyro-treated and matched EH KT88 for my ASL Hurricane II DT. I turn down the bias and install those tubes, but 8 out of 16 cannot achieve a stable bias. The recommendation is to have a bias of 450 but those 4 can only keep a low 200 bias and if I ever turn up the bias it jump all the way to 600+. I keep them running at low bias for over 8 hours but no improvement.
So I courier 8 of those back to Ron Sheldon of Cyroset and he said they tested fine and he said he will send to the New Senser for testing. I got 8 replacement tubes but at least 1 out of the 8 cannot stabilize again.
Cyroset now do NOT allow me to get it replaced.
I recently put an order of 16 cyro-treated and matched EH KT88 for my ASL Hurricane II DT. I turn down the bias and install those tubes, but 8 out of 16 cannot achieve a stable bias. The recommendation is to have a bias of 450 but those 4 can only keep a low 200 bias and if I ever turn up the bias it jump all the way to 600+. I keep them running at low bias for over 8 hours but no improvement.
So I courier 8 of those back to Ron Sheldon of Cyroset and he said they tested fine and he said he will send to the New Senser for testing. I got 8 replacement tubes but at least 1 out of the 8 cannot stabilize again.
Cyroset now do NOT allow me to get it replaced.
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