Description

Tested Quad of 12AU7 ECC82 RCA Audio Receiver Guitar Preamplifier Vacuum Tubes Made in the USA 17mm gray ladder plates, two spacers, square wire getter frames and top getter flashes Faded stencils Same construction / configuration Please see the photos for more detail Excellent balanced test results for Gm: 1.85 / 1.75, 1.9 / 2.0, 1.9 / 1.8 and 1.95 / 1.9 For Gm, 1.3 is the suggested minimum value No shorts detected For reference we use a calibrated Triplett 3444A Tester Estimated delivery within the USA is from 3 to 7 business days Our standard shipping is US Postal 1 st class We combine shipping when applicable Please contact us with any questions