Tube Burn-in Process: Psvane


My question is not limited to the vagaries of tube burn-in but to the life cycle of amps, pre-amps, and cables even. I'm about 20 hours into the break-in period of a quad of Psvane CV-181-T's in my VAC Phi 300.1 It's expected that right out of the box, they will play closed-in, frigid, as it were. At about 10 hours they bloomed deliciously, but shortly after, receded again and at 30 hours still haven't regained their exuberance.

I've noticed the same close-open effect with cables and other electronics as well.

Any ideas as to why ?
dr_john

Showing 2 responses by dr_john

Ah yes, the Stressless Chair. Back in the day I had one for a decade or more but at replacement time I was told they were no longer being made. Maybe they're back ?
Will they burn in just with the amp powered on, or does a signal need to be passed through them ?