2x Matsu/Mullard 12AX7 ECC83 /Vintage Panasonic /Matched Pair /NOS AudioTubes

12ax7 ecc83 cv4004 5751 e83cc ecc803 6057 6681 7025 7058 7729 b759 m8137 12rhh14. old panasonic audiophile crown-jewel, highly revered for incredible sound reproduction, and often compared to mullard sonics.

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