I received four matched Amperex 7308 White Lable PQ's today. Initial listen is wonderful. Best I can describe they seem a bit wetter and warmer than the Sieman gold pins (provided as TP upgrade) with a nice sound stage and localization of instruments, lively, and a "break your heart" beauty to some passages. I am at some disadvantage in that my DAC is in for repair (one channel stopped working last week) and so I am using a Yahama DVD player as source at the moment. Can't wait to hear these tubes with my usual front end. (Well, I guess I will have to wait:)