I've had three tube failures in last couple years, two in ET-3 SE.
One of the failures was the stock CJ tube (Noisy) 2nd in ET-3SE was a Mullard I believe from Tube Depot.
3rd was earlier this year, EAT in ET-5.
In each case, the tube was good one minute and failed during use, went immediately noisy and/or very microphonic. My "assumption" is that each was simply a failure and not affected by the specific use by CJ.. but I surely don't know that for a fact.
...and I don't play heavy-metal music.
