Description
Matched Pair RCA 6SL7GT 6SL7 Amp Tubes Smoked Glass NOS Tested Tubes have smoked glass and silk screened bases. Date codes 5-43 and .KC These tubes tested strong good and fairly closely matched on my recently calibrated TV-7 tube tester, at 56/60, and 54/50, with a test value of 32 being the minimum for each triode section of a good tube, and a test value of 46 being the reading of a "new" tube. All tubes pass short and gas tests where applicable