I am on my 3rd quad of EL34PH tubes being run in my Cary SLI-50.
Fantastic sounding tube. While having a different presentation than the Winged-C’s, they are very similar from a qualitative standpoint. The Winged-C’s have been some of the best sounding/performing tubes I have used in the amp.
Love the EL34PH. Well balanced tube, with a great sense of space/air. Tight bass, textured mids and clean/extended highs.
I do have to complain about the longevity of these tubes, which quite frankly sucks.
The first quad had issues w red plating after a couple of hundred hours. The dealer replaced them with a fresh quad after some back and forth. The second quad lasted a little longer, and one of the tubes red plated from that also.
Ran some KT77’s for a while after that followed by some elcetrohome tubes (which did not deliver) so I ordered another quad of the EL34PH’s and I am hoping these prove to be a bit more reliable. If they are not, I will have to go back to the Winged-C’s which have sadly become rather expensive - but at least I know they last for a more reasonable amount of time.