The 6189 / 12AU7WA is a rugged, industrial-grade version of the 12AU7, known for dependable construction, long service life, low noise and stable performance. These tubes were professionally treated by Cryogenics International.
Item Tag: 6189
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1955 GE JG-6189/12AU7WA PLATINUM+ Black Plate 3X Mica Preamp Tubes Matched Pair
Silver Grade tubes are matched within 20%, Gold Grade tubes within 15% and Platinum Grade 10%. You are purchasing a ” Platinum Plus ” grade matched pair of tubes. The price listed is for one pair of tubes.
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1964 GE JG-6189/12AU7WA PLATINUM PLUS+ Halo Getter Preamp Amp Tubes Matched Pair
Silver Grade tubes are matched within 20%, Gold Grade tubes within 15% and Platinum Grade 10%. You are purchasing a ” Platinum Plus ” grade matched pair of tubes. The price listed is for one pair of tubes.
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True NOS Gold 3-Mica SYLVANIA 6189/12au7 Tubes Maxi PreAmp 2 Tested M0371
Sound Profile; The Sylvania (gold lettering, 3-Mica) JHS 6189 (a military-grade 12AU7WA variant), Users describe describe it as having “good detail without edge,” providing a clear yet non-fatiguing listening experience.