Hi, I just purchased a pair of Psvane Horizon 12au7-AT and a pair of 12ax7-AT from your Amazon store, now waiting for the goods to arrive. I'm planning to change my front tubes on my Muzishare X7 Amp that is currently running on stock tubes for almost a year. After doing some research and watching quite a few reviews on YouTube, I've decided to make these purchases.
I'm also planning on changing my current power tubes with the Psvane Horizon KT88-AT tubes you are selling on Amazon. While doing my research, I found a very similar looking Psvane tube with model number KT88-PT tubes. May I know are these KT88-PT tubes similar to the Horizon KT88-AT tubes? If not, what are their differences in terms of quality and sound signature? Thanks you in advance for answering.