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(!!!!!) (Best Overall Pair) 7N7 Sylvania chrome top NOS 1950's 1-2% matched (8.6/8.6ma and 8.6/8.4ma) (same Gm) (best 6SN7 sub using adapter sockets)
(!!!!) (BEST PAIR) 7C5 Sylvania branded International NOS 1960's (39ma and 40ma) (LOKTAL BASE 6V6GT)
(!!!!) (Recommended Pair) 7N7 Sylvania branded GE chrome top NOS 1954-1956 (7.4/7.0ma and 7.4/7.2ma) 1-2% matched
(!!!) (Recommended Pair) 7N7 Sylvania NOS branded GE and RCA 1960-1965 (9.4/8.0ma and 8.0/8.4ma) (close Gm)
(!!) (Best Single) 7AF7 Sylvania branded Hytron NOS round black plates NOS 1952 (9.6/9.4ma) 1-3% section balance
(!!) (Best Single) 7N7 Sylvania branded Philco NOS parallel black plates 1940's (7.5/7.9ma)
(!!) (PAIR) 7AF7 Sylvania branded RCA and GE NOS black round plates NOS 1956-1958 (7.0/7.6ma and 8.2/7.8ma) (close Gm matching)
(!!) 7N7 Sylvania branded Philco used/good short bottle parallel gray plates 1948 (7.2/7.6ma)
(!!) 7N7 Sylvania NOS 1960's (8.6/10.2ma)
(!) (BEST PAIR) 7B7 Sylvania branded GE NOS 1952 (100/60 and 98/60)
(!) (Best Pair) 7C7 Sylvania chrome tops NOS 1952 (93/60 and 95/60)
(!) (BEST PRICE) 7E5=1201 US Brands NOS (4 tubes for $14.99)
(!) (Best Single) 7N7 Sylvania NOS 1960 era (10.8/11.2ma)
(!) (Good Single) 7N7 Sylvania branded GE NOS 1961-1962 (7.5/8.3ma)
(BEST PRICE) 7A5 NOS (4 for $11.99)
(BEST PRICE) 7A6 US Brands NOS (4 tubes for $11.99)
(BEST PRICE) 7B5 US Brands NOS (4 tubes for $11.99)
(BEST PRICE) 7B8 NOS (4 tubes for $11.99)
(BEST PRICE) 7C4=1203A US Brands NOS (diode) (4 for $11.99)
(BEST PRICE) 7C5 US Brands used/good mostly 1950's (4 tubes for $16.99)
