Matched Pair General Electric GE Nickel Plate 6AU6 Vacuum Tubes Valves Tchaikovsky new in box Sylvania 6AU5GT

new in box Sylvania 6AU5GT tubes in this lot

black plates and Micanol bases

matched pair of GE 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

GM-Delco-BRANDED 6AX8 tubes tested to spec on our Paul Hart-calibrated TV7/U

They have gray plates

Matched Pair General Electric GE Nickel Plate 6AU6 Vacuum Tubes Valves Tchaikovsky new in box Sylvania 6AU5GTThis perfectly matched pair of GE nickel plate 6AU6 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Both measured 72 where minimum (65%) is 58. These tubes have top, harp getters; nickel plates and excellent flashing. I am playing them in my Musical Paradise MC 3 single ended integrated amplifier (with adapters, not included) with Aimee Mann's seminal "Magnolia" album and they sound