JHS 5814A [12AU7]. By SYLVANIA. ALL SOLD AS-IS. make this clear.
Item Tag: SYLVANIA
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2 SYLVANIA Gray Plate O Getter JAN 5814A Tubes, Maxi-Preamp II Tested NOS SM1356
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).
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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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Pair (2) vintage 1960s Sylvania Baldwin 12AU7A vacuum tubes – TV-7 test as NOS
This listing is for a Pair (2) of vintage 1960s Sylvania Baldwin 12AU7A vacuum tubes. Long grey plates with top halo getters. They are used but the pair you will receive will test above minimum new spec (86/86) on my TV-7. Readings will be provided for each tube in the shipping box (sorry I don’t have time to provide this in advance). Also tested for shorts and gas. And I popped each in an amp and they sound great. As you may know, organ tubes were selected for their low noise floor and Baldwin got some of the best. Guaranteed good. Returns accepted. No boxes. Thanks!
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VACUUM TUBE ~ 6JC6A ~ SYLVANIA ~ 6JC6A
VACUUM TUBE SYLVANIA # 6JC6A. SYLVANIA ~ 6JC6A. VACUUM TUBE. Lot # 139.
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Matched Pair 6BQ5 Sylvania & unbranded Vacuum Tubes, TV-7D Tested – will combine
‘Matched’ refers to comparing the gm test results between the lowest to the highest of the identical sections of a set of tubes. ‘Matched’ I consider to be within 10%. Vacuum Tubes. ‘Closely Matched’ I consider to be within about 5%.