(!!!!) (Best Overall Quad) 6106 Bendix 1950”s rebranded 5Y3WGTA Heintz & Kaufman NOS (matched quad) 1-3% matched Title: 6106 Bendix NOS 1950”s rebranded “”5Y3WGTA Heintz and Kaufman quad

1 matched quad) 6106 Bendix NOS 1950”s rebranded “”5Y3WGTA Heintz and Kaufman”” in H & K boxes 1970”s double “”D”” getter halos

1 tube) 68/40 and 69/40

1 tube) 67/40 and 69/40

1 tube) 67/40 and 68/40

1 tube) 67/40 and 68/40 slightly tilted glass

6106 is a indirectly heated (slow warmup; 30-45 seconds) sub for a 5Y3GT

5Y3GT has a directly heated filament