Minimum 32. Tube 2: 58/58. Tube 1: 56/58. Tube 2: 66/66. Tube 1: 66/68. Tube 2: 61/59. Tube 1: 60/61.
Item Tag: 12AX7
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One Amperex Bugle Boy 12AU7/ ECC82. One Labeled Elect. for Medicine.
Pair of Amperex 12AU7/ECC82. where minimum is 50. Tube 2: 96/86 etched code >2D4.
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3- MULLARD BLACKBURN 12AX7 ECC83 TUBE (I61-series circa 1961) Strong Trio?
All three tubes tested 140+/140+ on my Eico 666 tube tester where 80 is listed as a minimum value. Nice strong trio with gray plates and halo getter. Please email with any questions or concerns. Thanks for looking!
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12AX7A/ECC83 Mullard MaxiPreamp2/TV7 tested (1) tube lot
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
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NOS Amperex 12AX7 ECC83 Electronics for Medicine Tube BALANCED Bugle Boy 12ax7a
One of the best 12AX7 ECC83 tubes you can buy! Low noise phono grade tube. Tube is NOS+ tested with BALANCED triodes. Simply good as it gets! Tubes codes shown in photo and are <9A1. 2x tested with included Amplitrex testing shown in photos.
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(12) NOS to Strong RCA Made 12AX7/12AX7A Guitar Audio Tubes
(12) NOS to Strong Testing RCA Made 12AX7 & 12AX7A Guitar Audio Tubes, Test scores on tubes Good Luck Bidding ! (((((I do not lower declared value or write as gift due to US Laws))))) I no longer ship to China & Vietnam due to lost packages in Custom’s
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MATCHED NOS PAIR GE 12AX7 ECC83 Fat Plate VINTAGE Audio VACUUM TUBES 8.9843
Model 12AX7 ECC83. Plate Fat Plate Grey. Variant Fat Plate. Condition NOS. ALL TUBE AUDIO. Tube Specifications. Tube Type Dual Triode. Why Buy From All Tube Audio?.
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LOT OF 5 MULLARD 12AX7/ECC83 TUBES I61 TYPE (1959-1964 SHORT PLATE) LOW TEST
Marked “Dumont”, I61 B3C3, reads 38/40 (1022-348 date code 1963). Marked “Eico”, I61 B3D5, reads 43/34 (1022-412 date code 1964). Marked “Heath”, I61 B9D, reads 35/36 (1022 941 date code 1959). Marked “Heath”, I61 B9E, reads 30/36 (1022 941 date code 1959).
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(2) Siemens (Telefunken Brand) 12AX7/ECC83 Tubes ~ MATCHED PAIR ~ Test As NOS!
Manufactured in 1963. Slightly used with tons of life left! Test results are as follows with 32 being the minimum value (65%), low NOS is 42 (85%) and NOS is 49 (100%) 12AX7/ECC83 Tubes ~ MATCHED PAIR.