(!) (Best Pair) 6FY5=EC97 International Servicemaster NOS made in JAPAN (22ma and 23.5ma) (Copy)

1 pair) 6FY5=EC97 International Servicemaster NOS made in JAPAN

1 tube) 22.0ma Gm=15,100

1 tube) 23.5ma Gm=16,100

– Wright Sound

NOS mA 10-12mA+

NOS Gm 13,000+