After about a year of use. one of the Mullard "reissue" EL84 tubes started making popping sounds. EICO tube tester verified a bad tube.
I have tried other EL84s and the Mullard reissues sound best to me. I'd love to have some NOS Mullards but...
Should I have been using the 4 ohm tap, or should I try to squeeze in a pair of 6 ohm Edcore output transformers. I have a pair of Edcores with 4, 8, and 16 ohm taps, for a different ST35, using a chassis and board from Triode. The are much larger and heavier and the 6 ohm version uses the same core and end bells. The only difference is a slightly lower input impedance than it's 4, 8 and 16 ohm brother.
Should I order a 6 ohm pair of transformers? I can use the 4 ohm taps on the Triode ST35s and just chalk it up as a bad tube. No damage was done to the amp, as it powers a pair of Rectilinier Mini IIIs just fine with a set of JJs. I'd like to order another set of Mullards but don't want to damage that wonderful little amp.
Thanks so much.