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12SC7 JAN METAL
From bulk trays, fine black metal octal-based twin triodes manufactured in Canada by renowned Marconi. These excellent tubes are designed primarily as phase inverters and audio amplifiers, each section having an amplification factor of 70. Tubes are printed in red JAN 12SC7 MARCONI MADE IN CANADA, and coded V A5; metal bases are stamped 12SC7-H.