I'm wondering what others are using for tubes. I have the symphonies v2. I am using 3 Mullard reissue 12ax7 tubes. They are nice, sweet and warm, with really nice highs but lack dynamics and drive and are a bit thin in the midrange. I also have Chinese 12ax7b which have a lot of drive and punch but are also dark sounding, lacking a bit in transparency, and have rolled off highs. I'm wondering what other options are available. I am thinking of the reissue tung sol 12ax7 or seeking out NOS tubes. I would love to try GT Mullard 10M or Chinese 12ax7C 9th gen, as I have heard these are really nice tubes, but no longer available.
