(!!) (Single 1964) EL84 Mullard UK NOS (rX3-B4H5=1964) (47ma)
(!!) 6BQ5 Sylvania gray plate NOS 1960's (63.5ma)
(!!) EL84 Ultron USSR Russia used 1990 era (32ma)
(!) (BEST VALUE PAIR) EL84 Brimar England NOS 1962 (67ma and 66ma) (recommended for FIXED-BIAS amp only due to high current)
(!) (Good Value) 6BQ5 Sylvania gray plate used/very good 1960's faded printing (47.5ma)
(!) (PAIR) 7189 Sylvania black plate NOS and like new 1960's (52ma and 56ma)
(!) (Recommended Single) 6BQ5 Tungsol NOS 1960 era (39ma)
(!) (Recommended Sylvania Pair) 6BQ5 Sylvania black plate 1960's and 1973 (68ma and 62.5ma) (recommended for FIXED-BIAS amp only due to high current)
(!) (SINGLE) 6BQ5 Sylvania black plate NOS 1970's (46ma)
(!) (SINGLE) 6BQ5=EL84 Heath Mullard Great Britain used/good 1959 (40ma)
(!) 6BQ5 GE used/good 1960's (35.5ma)
(Best Single) 6BQ5 Raytheon NOS 1960's (62ma)
(Best Value Single) 6BQ5 Hitachi Japan used/tests like new 1960's (44.5ma)
6BQ5 GE NOS 1960's (40ma)
6BQ5 GE NOS 1960's (47ma)
6BQ5 GE NOS 1960's (70ma) (recommended for FIXED-BIAS amp only due to high current)
6BQ5 GE NOS 1971 (43.5ma)
6BQ5 GE NOS 1977 (58.5ma)
6BQ5 GE NOS/80-85% 1959 (36ma)
6BQ5 Lindal Japan like new 1970's (50ma)
