For those interested in the Psvane EL34PH's my experience with them ended at 140 hours when one of the four tubes crackled then flashed with a loud pop, tripping my 2013 Jolida 320CRC, off. Two other brands of tubes with about 500 combined hours had no issues with the same amp, all using the stock fuse.
The EL34PH that popped had been glowing noticeably brighter from day one than the other three in it's matched quad.
A different tube, only one from the same quad set, had what looked like sea foam (it's glue) bubbling out of a large portion of it's seam between the glass and brass-coloured base.
I've returned all four Psvane's back to China now and haven't decided yet whether to replace them with the same or try a set of Psvane 6CA7-TII's or wait for the Shuguang Natural Sound 6CA7 equivalent to come available.
Considering the broken pin(s) issue, as well, I'd be lying if I said I didn't have quality control concerns with the new EL34PH's.
For what it's worth, they sounded outstanding before one broke.