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Preamp tubes
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(!!!) (Best Single) 12AU7A RCA clear top NOS 1964 (8.4/8.6ma) (same Gm)
$55.00
$64.99
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(!!!!) (Best Single) ECF80=6BL8 Telefunken Germany NOS 1971 (12.5/10ma)
$55.00
$64.99
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(!!!!) (Best Overall GE Single) 12BH7A GE ribbed plates NOS 1981 (11.6/11.8ma) 1-3% section balance
$55.00
$64.99
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(!!!!) (Single 1950's) 12BH7A RCA branded Westinghouse narrow black plates NOS "U" getter mid-1950's (10.6/7.4ma) (1st series made)
$55.00
$64.99
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(!!!!) (Recommended Pair) 12AU7A GE NOS 1958 (9.5/9.3ma and 10.6/9.2ma) (Rogue)
$55.00
$64.99
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(!!!!) (Best Value Pair) 6SN7GTB RCA coin-base NOS 1970-1975 (9.8/7.0ma and 9.0/7.2ma)
$59.00
$69.99
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(!!!!!) (Best Single) PCC88=7DJ8 Siemens Germany branded Pope NOS 1979 (14.2/14.5ma)
$59.00
$69.99
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(!!!) (Single 1955) JG-12AY7 GE "D" getter like new 1955 (3.3/2.7ma) (High Gm)
$59.00
$69.99
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(!!!!) (Single 1955 era) 12BH7A RCA narrow black plates used/very good "U" getter halo 1955 era (8.6/10ma) (1st series made) (rare)
$59.00
$69.99
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(!!) 6SN7GT Raytheon taller bottle parallel black plates NOS 1949 (8.2/8.0ma)
$59.00
$69.99
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(!!) (Recommended Pair) 6DJ8 GE NOS 1974-1980 (13.5/14.2ma and 12.4/13.5ma)
$59.00
$69.99
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(!!!!) (Recommended Single) EC92 Valvo Germany by Siemens NOS 1972 (12.5ma)
$59.00
$69.99
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(!!) (Best Single) EC92=6AB4 Siemens Halske Germany NOS 1971 (10.2ma)
$59.00
$69.99
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(!!!) (BEST PAIR) EF184 Mullard branded Philips NOS 1965 (11.2ma and 11.6ma) 1-3% matched
$59.00
$69.99
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EF804 Telefunken Germany NOS 1957 (2.7ma)
$59.00
$69.99
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(!!!!) (Best RCA Single) 5687 RCA black plates NOS 1963 (39.2/41ma)
$59.00
$69.99
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(!!!) (Best used single) 12AT7 Telefunken Diamond Bottom used/good 1960's (10.0ma/10.8ma)
$59.00
$69.99
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(!!!) (Single 1956) 12AY7 GE "D" getter like new 1956 (3.1/2.8ma)
$59.00
$69.99
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(!!!) (Best Value Single) CV4003=M8136=12AU7 Mullard UK NOS large "O" getter halo 1962 dirt was over entire tube (10.6/11.0ma)
$59.00
$69.99
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(!!!) (Recommended Single) 12BH7A Westinghouse black ribbed plates "U" getter halo 1961 (8.5/10ma)
$59.00
$69.99
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(!!) (slightly microphonic) 6922=E88CC Tesla Czech Republic NOS 1970 (18.6/20.4ma) (RODE)
$59.00
$69.99
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(!!!!) (Best Single) JAN-5687WA Sylvania NOS 1967 (38/39ma) (Highest Ma and Gm)
$59.00
$69.99
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(!!) (Recommended Pair) ECC40 Philips NOS made by La Radiotechnique, Chartres/France 1969 (5.5/5.6ma and 5.5/6.0ma)
$59.00
$69.99
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(!!!) (Best Single 1954) JG-12AX7 GE gray ribbed plates "U" getter 1954 used/tests like new (Gm=1500/1600 and 1.1/1.1ma)
$59.00
$69.99
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