(!!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1955 and 1968 (91ma and 96ma) (these are some of the best sounding 6B4G ever made)
(!!!!) (Best Raytheon Pair) 6B4G Raytheon NOS 1940's separate plates (92ma and 93ma)
(!!!!) (Best Value Pair) 6B4G Raytheon NOS 1940's separate plates, 1 branded Philco (90ma and 91.5ma)
(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1958-1967 (79ma and 85ma) (one of the best sounding 6B4G ever made)
(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1963-1969 (86ma and 88ma) (these are some of the best sounding 6B4G ever made)
(!!!) (Best Pair) 6B4G Sylvania rebranded GE 1952 separate plates NOS (87ma and 87.5ma) (High Ma and Gm)
(!!!) (Best Sylvania Pair) 6B4G Sylvania NOS 1940's same build (92ma and 95ma)
(!!!) (Best Value Pair) 6B4G Sylvania NOS 1952 same build (76ma and 80ma)
(!!!) (Recommedned Pair) 6B4G Sylvania NOS 1940's, 1 tube rebranded RCA - same build (106mA and 107mA)
(!!!) 6B4G Tungsol NOS 1940's (81ma)
(!!!) JAN-6B4G Raytheon NOS 1940's (83ma)
6B4G Ken Rad branded RCA coated glass NOS 1946 (110ma)
6B4G Philco by Sylvania NOS 1947 (80ma)
6B4G Raytheon NOS 1950 era (94ma)
6B4G Raytheon NOS separate plates 1940's (100ma)
6B4G Sylvania rebranded Delco NOS separate plates 1952 (81ma)
6B4G Sylvania rebranded RCA used/good 1953 (77.5ma)
6B4G Sylvania used/like new 1940's (96ma)
6B4G Zenith by Sylvania NOS plates connected 1940's (123ma)
