Tested and Working.
Item Tag: United States
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5814A 12AU7A x2 Raytheon 3 Mica Twin Triode Tubes-Date Match-Tested-Free Ship US
5814A 12AU7A x2 used Raytheon triple mica twin triode tube pair. Based on markings, the tubes may have been manufactured by GE. Good balance.
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Lot of 6 Sylvania 5814A Tubes Tested NOS Quality Vintage Vacuum Tubes
Four Sylvania 5814A tubes with testing information on the side of each box. Your testing system may give different results; this is normal and will not be a valid cause for a refund. All tubes are sold as is. Please message me if you have any questions or want more photos.
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CBS 5814A tubes, black plates, square / D getter
never been used tested strong balance tester min/good 2200 2650/2600
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5814A Match Balance 2 Tubes Triple Mica New (New Old Stock) 1Year Warranty 12AU7
Reference tube is tested first then the tube listed for sale.
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ONE CBS Hytron 5814A Tube / Square Get Amplitrex Tested Strong & BALANCED 12AU7
ONE CBS Hytron 5814A tube. Tubes Tested on Amplitrex AT-1000 computerized tube tester (fixed bias mode). -Tube #1= 2100 micromhos and 10.3 mA plate current. -Tube #2= 2100 micromhos and 10.6 mA plate current.
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1960s 12AX7 ECC83 Tung-Sol Tube Gray Long Plate O Getter TV7 Test NOS TS7-11
1960’s 12AX7 / ECC83 GAP/R Computor Tube. Made In USA. Triode:1 Tested NOS : 58/ 32 Baseline. Triode: 2 Tested NOS: 48/ 32 Baseline. 12AX7 Minimum Range: 32. 12AX7 Nos Range 45 +. Top O Getter.
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1960s 12AX7A ECC83 Tung-Sol Tube Gray Long Plate O Getter TV7 Test Good TS7-3
1960’s 12AX7A / ECC83 Tung-Sol Tube. Made In USA. Triode:1 Tested Good : 41/ 32 Baseline. Triode: 2 Tested Good: 43/ 32 Baseline. Top O Getter. NOS tubes fall within the GM range published in the RCA Receiving Tube Manual; variation above/below average is normal.