(!) (Pair) 12B4A GE NOS 1960's (37ma and 38.5ma)

1 platinum pair) 12B4A GE NOS 1960's same build
1 tube) 37ma Gm=7000 HP GE
1 tube) 38.5ma Gm=7250 Admiral GE

- Mapletree Ear+ Purist Headphone amp
- Mapletree Audio Design Ear+ Purist HD 2007
- Ultra-Fi linestage
- Graham Ingle, Black Cat Electronics
- Experience Music DHT