(!!!) (Recommended Single) 6SN7GTB Sylvania NOS 1960's (7.2ma and 6.6ma)
(!!!) (Recommended Single) PCC88=7DJ8 Siemens Germany NOS 1972 (11.5/12.2ma)
(!!!) (Single) 7025 Amperex Globe Logo Holland used/good 1967 (Gm=1300/1400 and mA=0.9/1.1ma)
(!!!) (Single) ECC81=12AT7 Siemens Halske branded Mullard like new 1966 (8.2/7.4ma)
(!!!) (slightly microphonic) 6922=E88CC Tesla Czech Republic NOS 1970 (22/21ma)
(!!!) (Sylvania Pair #2) 5U4GB Sylvania NOS 1970's (60-62/40 and 60-62/40)
(!!) (Best 6GV8) 6GV8=ECL85 RCA Holland NOS (1 in stock)
(!!) (Best Mullard Pair) EZ80=6V4 Mullard La Radiotechnique Chartres plant France NOS "O" getter halo 1970 (63-64/40 x 2 tubes) 1% matched
(!!) (BEST VALUE) GZ34 Mullard rebranded Sylvania used/like new 1969 (58/40 and 60/40)
(!!) (Good Value Single) 6201=12AT7 Valvo Germany rebranded Philips SQ 1970 (6.8/7.8mA)
(!!) (Recommended Single) 12AT7=ECC81 Mullard shield logo NOS 1970 (8.0/8.4ma)
(!!) (Recommended Single) 5881 GE Canada NOS 1970 (73ma) (same build as Tungsol)
(!!) (SINGLE 1953) 12BH7 GE NOS gray oval plates "U" getter 1953 NOS (9/12ma)
(!!) (Single) PCC88=7DJ8 Philips Holland 1973 (9.5/10.6ma)
(!!) 12AU7A CBS black plates NOS 1960 era (9.5/11.8ma)
(!!) 5751 GE 5 Star used/good 1970 (1.6/1.7ma)
(!!) 5U4GB RCA NOS 1970 some white oxide flakes inside tube (55/40 and 55/40)
(!) (BEST PAIR) 6CA4 RCA NOS 1960's - 1972 (54-56/40 and 54-54/40) (Wright, Counterpoint, Cary, Zanden)
(!) (Recommended Single) 6EU7 RCA NOS 1970's (51/32 and 60/32)
(!) (Recommended Single) 6GM8=ECC86 SIEMENS HOLLAND NOS 1970 (4.0/5.0ma)
