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1 low noise pair) JAN-12AT7WC Sylvania NOS 1975-1980
1 tube) 10/8.6ma Gm=5900/5200 (1975)
1 tube) 10.2/9.2ma Gm=5500/5300 (1980)
Matched on Amplitrex
Good Ma range 8-10ma
Good Gm range 4500-5500