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(!!!!) (Best Pair #3) 6BQ5 GE NOS 1970's-1982 same build (51ma and 55.6ma)
(!!!!) (BEST PAIR #3) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (18.8/16.3ma and 18.9/17.2ma)
(!!!!) (BEST PAIR #3) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (20.7/18.5ma and 18.2/21.9ma)
(!!!!) (Best Pair #3) 6EU7 RCA NOS 1967 (48-49/32 and 51-52/32)
(!!!!) (BEST PAIR #4) 6DJ8 Philips by Matshushita JAPAN NOS 1960's (15.9/15.8ma and 14.5/15.5ma)
(!!!!) (Best Pair #4) EL34 Mullard UK branded Mullard and Telefunken XF2 "O" getter halo NOS 1969 (85.5ma and 83.2ma) 1-3% matched (best sound for the money)
(!!!!) (Best Pair #4) EL34 Mullard UK branded Mullard and Telefunken XF2 "O" getter halo NOS 1969 (93.2ma and 89.5ma) 1-5% matched (best sound for the money)
(!!!!) (Best Pair 1963) 5U4GB GE NOS 1963 same date codes (60-62/40 and 60-60/40 x 2 tubes)
(!!!!) (Best Pair) 6CA4 RFT East Germany (Funkwerk) NOS 1970's (49/40 and 50/40 x 2 tubes) 1% matched
(!!!!) (BEST PAIR) 6EU7 Tungsol Dumont "D" getter NOS 1963 (50-51/32 and 49-52/32) 1-3% matched
(!!!!) (Best Pair) 6FQ7 GE NOS 1960's (7.5/8.0ma and 7.0/7.2ma) (Close Gm) 1-5% matched
(!!!!) (Best Pair) 6FQ7 Zenith by GE NOS 1977 (7.2/8.0ma and 7.0/7.8ma)
(!!!!) (Best Pair) D3a=7721 Siemens Germany NOS 1978 (32.5/33ma) 1% matched
(!!!!) (Best Quad) 6L6GT=6n3C Russian NOS 1982 in white boxes (64.5/65.6/65/66.5ma)
(!!!!) (Best Quad) 6L6GT=6n3C Russian NOS 1982 in white boxes (66.2/67.2/67.0/68.2ma)
(!!!!) (Best Quad) 6L6GT=6n3C Russian NOS 1982 in white boxes (70/70.5/71.6/72.0)
(!!!!) (Best Quad) EZ81=6CA4 RFT East Germany (Funkwerk) NOS 1970's (1 quad)
(!!!!) (BEST RCA PAIR) 6EU7 RCA NOS 1970 (49-51/32 and 51-52/32)
(!!!!) (Best Single 1963) PCC88=7DJ8 Philips Miniwatt Holland "O" getter NOS 1963 (14.2/12.0ma)
(!!!!) (Best Single 1970's) 6SN7GTB Sylvania branded GE coin-base NOS 1970's (9.2/9.2ma) 1-2% section balance
