Offered here is a precision-matched pair of vintage Sylvania 6L6GC power vacuum tubes. These American-made classics feature the robust Grey Plate structure and Top Ring Getter, renowned for their high power handling and classic warm tonal signature.

Both tubes have been thoroughly analyzed on the Amplitrex AT1000 digital tester. Following our Percentage Method, the results below show how each tube performs relative to the 100% factory design-center specifications for this tube type (Ip = 72.0mA / Gm = 5200 µMhos).