I would love to hear them, rather than idly speculate on their sound quality. That won't happen as I have plenty of nice Teles, Amperex and Mullards in my kit. Perhaps someone with deep pockets will give them a roll (see, I made a pun).
It does give me pause that the eBay seller lists the tube as a sub for 12AY7. The pin pattern is the same but the two are not electrical equivalents.
It does give me pause that the eBay seller lists the tube as a sub for 12AY7. The pin pattern is the same but the two are not electrical equivalents.