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1 pair) 6K6GT RCA black plate NOS 19731 tube) 44.5ma Gm=2960 (July) EJ1 tube) 49.0ma Gm=3200 (January) ED
for:
- THD Bivalve- Fender- Victoria Regal II- Fender Reverb Unit 1962 "brownface" (6G15 circuit)