Ɛ579, rca label, w/ boxes included. hard to find + premium special grade 12ax7. crown jewel '60s marconi, highly revered for their incredible sound reproduction, and often compared to mullard sonics. 6v6 6l6gc 6as7g 6sl7 6sn7 / 6060 6072 6080 6085 6106 6136 6158 6189 6201 6414 6520 6550/a.
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