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Preamp tubes

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(!) (#1 231D Best Value Pair) 231D Western Electric NOS 1954 (1.6/1.6ma)

(!) (#1 231D Best Value Pair) 231D Western Electric NOS 1954 (1.6/1.6ma)

$ 139.99
(!) (#1 24A Balloon) 24A BRUNSWICK Balloon used/tests like new, small crack in base (48/25) (3.8ma)

(!) (#1 24A Balloon) 24A BRUNSWICK Balloon used/tests like new, small crack in base (48/25) (3.8ma)

$ 16.99
(!!!) (Best Overall Pair) 286A Western Electric

(!!!) (Best Overall Pair) 286A Western Electric "top printing" mesh-plate NOS 1942-1945 (6.4ma and 6.6ma)

$ 199.99
(!) (Pair) 404A Western Electric used/good 1963-1966 (17.0ma and 17.2ma)

(!) (Pair) 404A Western Electric used/good 1963-1966 (17.0ma and 17.2ma)

$ 44.99
(!!!) (GE Pair) 6350 GE NOS 1968-1973 (10.3/9.8 and 8.6/11.2ma)

(!!!) (GE Pair) 6350 GE NOS 1968-1973 (10.3/9.8 and 8.6/11.2ma)

$ 88.88
(!!) (Best Pair) 6A7G Marconi Radiotron Canada NOS 1950 era

(!!) (Best Pair) 6A7G Marconi Radiotron Canada NOS 1950 era

$ 38.99
(!) (#1 6CW7 Best Single) ECC84=6CW7 Mullard branded Philips Miniwatt Holland 1962 (10.6/11.0ma)

(!) (#1 6CW7 Best Single) ECC84=6CW7 Mullard branded Philips Miniwatt Holland 1962 (10.6/11.0ma)

$ 11.99
(!!!!) (BEST SINGLE) E188CC=7308 Philips Miniwatt SQ Holland NOS 1963 (17.0/16.6ma)

(!!!!) (BEST SINGLE) E188CC=7308 Philips Miniwatt SQ Holland NOS 1963 (17.0/16.6ma)

$ 298.88
(!!!) (Recommended Pair) 12AZ7A GE gray plates NOS 1969-1970 (8.2/8.0ma and 8.7/8.8ma) (McIntosh MC275)

(!!!) (Recommended Pair) 12AZ7A GE gray plates NOS 1969-1970 (8.2/8.0ma and 8.7/8.8ma) (McIntosh MC275)

$ 39.99
(!!!) (Recommended Pair) 12AZ7A Sylvania black plates NOS 1960's same build (8.2/9.8ma and 8.4/9.8ma))

(!!!) (Recommended Pair) 12AZ7A Sylvania black plates NOS 1960's same build (8.2/9.8ma and 8.4/9.8ma))

$ 39.99
(!!!) (BEST PAIR #2) ECC808=6KX8 Telefunken Diamond Bottom NOS 1963-1966 (1.1/1.3ma and 1.3/1.0ma)

(!!!) (BEST PAIR #2) ECC808=6KX8 Telefunken Diamond Bottom NOS 1963-1966 (1.1/1.3ma and 1.3/1.0ma)

$ 178.88
(!) (#1 Type 30 single) 30 RCA Victor NOS 1940's original box (4.3ma)

(!) (#1 Type 30 single) 30 RCA Victor NOS 1940's original box (4.3ma)

$ 19.99
(!) (Pair) 417A Western Electric used/good 1977 (12.2ma and 14ma)

(!) (Pair) 417A Western Electric used/good 1977 (12.2ma and 14ma)

$ 129.99
(!!!) (Recommended Single) 12AT7 Telefunken Germany <> bottom NOS 1957 (9.8ma/7.2ma)

(!!!) (Recommended Single) 12AT7 Telefunken Germany <> bottom NOS 1957 (9.8ma/7.2ma)

$ 99.99
(!) (#2 231D Best Value Pair) 231D Western Electric NOS 1953 (1.7/1.7ma)

(!) (#2 231D Best Value Pair) 231D Western Electric NOS 1953 (1.7/1.7ma)

$ 139.99
(!) (#2 24 Balloon) 124 Crosley by Arcturus Balloon used/tests like new 1930's (48/25) (3.0ma)

(!) (#2 24 Balloon) 124 Crosley by Arcturus Balloon used/tests like new 1930's (48/25) (3.0ma)

$ 17.99
(!!!) (Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.8/1.9ma and 1.8/2.0ma)

(!!!) (Best Pair) CK-5755=420A Raytheon clear top NOS 1965 (1.8/1.9ma and 1.8/2.0ma)

$ 39.99
(!!!) (BEST PAIR #3) 6463 GE NOS 1965 (14.5/12.8ma and 13.5/13.7ma)

(!!!) (BEST PAIR #3) 6463 GE NOS 1965 (14.5/12.8ma and 13.5/13.7ma)

$ 49.99
(!!!) (Single 1966) 6688=E180F Siemens Holland NOS gold pins 1966 (8ma)

(!!!) (Single 1966) 6688=E180F Siemens Holland NOS gold pins 1966 (8ma)

$ 21.99
(!) (#2 6EW7 Single Tube) 6EW7 GE Japan BIG BOTTLE NOS 1960's (5.0/37ma)

(!) (#2 6EW7 Single Tube) 6EW7 GE Japan BIG BOTTLE NOS 1960's (5.0/37ma)

$ 10.99
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