Hi Melody -
Thank you for inviting comments and discussion regarding Psvane tubes. I think one topic that would be of great interest to members of this forum is about how to purchase your tubes. There are multiple sites where Psvane tubes can be purchased. Of course, they all claim to have premium tubes, matched tubes, etc. Some sites claim that they are "authorized" sellers and that other sites cannot be trusted.
Please answer the following questions:
1. Are non-conforming tubes destroyed at the factory?
2. Are some sellers authorized and others are not?
3. Are only some sellers trusted to be selling best-quality tubes? If so, who are those sellers?
4. What is the warranty provided to purchasers of Psvane tubes?
5. Is the warranty provided by the seller or is it from Psvane?
6. Elsewhere, Psvane has described differences in sound for the various "families" of Psvane tubes. Are these differences reflected by differences in specifications? If so, can you provide the specifications for the various varieties of Psvane tubes? For convenience, please use the 6SN7 family of tubes as your case-in-point.
Thank you , in advance, for answering the above questions clearly and directly, line by line.