Description
One platinum matched pair (2 tubes), genuine E88CC Siemens, tested very strong! Identical internal construction, A6 7B and A6 8J codes, made in Siemens&Halske Munich plant, West Germany. Very strong pairs, a lot of life left in them, years, even decades of music in some decent preamp tested 90% of NOS values. No hum, no microphonics!