(!!!!!) (Recommended Pair) E80CF=7643 Valvo branded Philips Miniwatt SQ NOS 1963 (PREMIUM 6BL8 SUB) (Tuners)
(!!!!) (Good Value Pair) 6FQ7 Philips by Sylvania NOS 1980 era (6.2/6.0ma and 6.0/6.2ma)
(!!!!) (Good Value Pair) 6FQ7 RCA clear top NOS 1970's (6.0/7.0ma and 6.6/7.6ma) (same Gm) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!) (Best Overall Pair) 6FQ7 RCA clear top NOS 1964-1966 (8.8/9.4ma and 8.2/9.4ma) (STAX, MARANTZ, CONRAD JOHNSON)
(!!!) (Best Overall Single) E90F=6BH6 Philips SQ Holland NOS 1968 (8.4ma)
(!!!) (Best Pair #2) 6FQ7 RCA clear top NOS "D" getter halo 1966-1969 (7.6/8.0ma and 7.5/7.8ma) (same Gm) 1-3% matched
(!!!) (Best Pair #3) 6FQ7 RCA clear top NOS "D" getter halo 1965-1966 (7.4/7.6ma and 7.0/7.8ma) (same Gm)
(!!!) (Best Pair) 6AF4A Sylvania NOS 1965 (22.5ma and 22.8ma)
(!!!) (Best Single) E80CF=7643 Valvo branded Amperex Germany PQ NOS 1961 (Premium 6BL8 SUB) (Highest mA and Gm)
(!!!) (Best Value Pair) E80CF=7643 Valvo Germany branded International NOS 1961-1963 (PREMIUM 6BL8 SUB) (Tuners) 1-5% matched
(!!!) (Best Value Single) E80CF=7643 Valvo Germany branded International NOS 1961 (12.8/18mA) (PREMIUM 6BL8 SUB) (Tuners)
(!!!) (Best Value Single) E80CF=7643 Valvo Germany branded International NOS 1963 (10.8/13.4mA) (PREMIUM 6BL8 SUB) (Tuners)
(!!!) (Recommended Pair) 6DZ4 GE NOS 1960's (21ma and 22ma)
(!!!) (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma)
(!!) 6FQ7 RCA clear top NOS 1976 (7ma/8ma)
(!!) 7693=E90F=6BH6 Philips Holland PQ NOS 1964 (6.4ma)
(!) (PAIR) 6DZ4 GE NOS 1960's (19ma and 19ma)
(sold out) EL34 Telefunken Ulm Germany NOS 1961 original box (88ma) (rare)
6AF4 US Brands NOS (14 in stock)
6AF4A Raytheon Japan gray plate NOS (21ma)
