Gain (NOS Value=17 mu) 17.0 mu 17.6 mu. Gain (NOS Value=17 mu) 17.8 mu 17.5 mu. Tested on a Hi End Maxi-Preamp II tester for Gain (Mu), Transconductance (Gm), and Noise (dB).
Item Tag: 5814A
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Platinum Matched Pair 5814A 12AU7WA NOS TUNG-SOL Audio TUBE Long PLATES
NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states “Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.
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5814A 12AU7A NOS/NIB GE 5 Star Twin Triode Tube-1961-Tested-Free Shipping in US
Close balance. Tested for new performance and is factory fresh.
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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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Sylvania Gold Brand GB-5814A 5814 Gold Pin Vacuum Tubes Lot Of 5 Amplitrex Strg
All tested using an Amplitrex AT1000 tube tester with the following results (as photographed): Tube 1- 80/95% ip 86/95% gm Tube 2- 81/87% ip 86/95% gm Tube 3- 83/78% ip 90/86% gm Tube 4- 97/91% ip 99/98% gm Tube 5- 89/83% ip 93/90% gm
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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