Description: New old stock JAN Sylvania 6SL7WGT military-grade dual-triode vacuum tube in its original government box, date packed 1-78. The tube has been fully tested, with both sections reading strong and closely balanced. Test results: Gain (µ): 73.6 / 71.3 Transconductance: 1.63 / 1.60 mA/V Noise: 81.4 / 79.8 dB
