Description

Matched Pair 12GN7/12HG7 Triad NOS Vacuum Tubes Black Plates Halo Getters Tested at 98 & 101 on a calibrated TV-7D/U tube tester which is 138% & 142% of TV-7 Avg. New Avg. Min. (65%) TV-7 chart & Avg. New (100%) = 46 & 71 *We use the following testers: *Dan Nelson calibrated TV-7D/U with sweep tube adapters, & digital meter with plate current test at 150V. *Paul Hart calibrated/modified Westmore 501 (Triplett 3444) Not tested for noise or microphonics Test results may differ between various testers for many reasons such as technical design, aging components, etc. So while test results are a good indication of quality there can be some difference between the many differently designed & maintained testers. *For Multiple item purchases click the "Add to Cart" selection for each item *After all items have been added to your cart click on "Request Total From Seller " *An invoice will be returned with the correct 'combined shipping' & total due * If your purchase is not fully satisfactory please contact me . International customers welcome: Please do not ask for false value on customs forms. *Tubes will be shipped in a cardboard box with packing, usually bubble wrap or sheet foam Packed for protection Packed for ease in unpacking *Tubes will generally be cleaned Clean tubes will radiate heat better & operate cooler *Pins will generally be straightened/cleaned as needed Cleaned pins make better electronic connection *Most tubes are shipped in their boxes (or replacement boxes) I often repair a box so it will function properly *I try to get your package in the next mail after receiving your order.