(!!) (Recommended Pair) 6Y6GA Sylvania NOS same build (56.6ma and 57ma)

1 pair) 6Y6GA Sylvania NOS same build
1 tube) 57ma Gm=6500 Sylvania rebranded Raytheon D getter in United box
1 tube) 56.6ma Gm=6250 Sylvania O getter

– WAVAC SE-805, MD-805
– WAVAC 811
– JC Verdier SET