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Preamp tubes

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(!!!) (BEST VALUE PAIR) 01A Sylvania engraved base used/good 1930's (2.4ma and 2.7ma) (same Gm)

(!!!) (BEST VALUE PAIR) 01A Sylvania engraved base used/good 1930's (2.4ma and 2.7ma) (same Gm)

$ 59.99
(!!!!) (Best Pair #2) 01A RCA Cunningham engraved base NOS 1930's (3.3ma and 3.2ma) (same Gm)

(!!!!) (Best Pair #2) 01A RCA Cunningham engraved base NOS 1930's (3.3ma and 3.2ma) (same Gm)

$ 99.99
01A Raytheon 4-Pillar box plate NOS 1930's (2.8ma)

01A Raytheon 4-Pillar box plate NOS 1930's (2.8ma)

$ 44.44
(!!!!) (Best Overall Pair) 01A Cunningham NOS 1940 era boxes were factory sealed (3.7ma and 3.6ma) (Same Gm)

(!!!!) (Best Overall Pair) 01A Cunningham NOS 1940 era boxes were factory sealed (3.7ma and 3.6ma) (Same Gm)

$ 109.99
(!!!!) (Best Pair #1) 01A RCA Cunningham engraved base NOS 1930's (3.5ma and 3.4ma) (same Gm)

(!!!!) (Best Pair #1) 01A RCA Cunningham engraved base NOS 1930's (3.5ma and 3.4ma) (same Gm)

$ 109.99
(!!) (Single) 201A=UV-201-A Supertron Hoboken New Jersey NOS 1926 (2.5ma) (good Gm)

(!!) (Single) 201A=UV-201-A Supertron Hoboken New Jersey NOS 1926 (2.5ma) (good Gm)

$ 59.99
(!!!!) (Pair) 01A Arcturus NOS 1940's (2.3ma and 2.7ma)

(!!!!) (Pair) 01A Arcturus NOS 1940's (2.3ma and 2.7ma)

$ 88.88
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