4 US-Made 6211 Vacuum Tubes Lot Of Four Sylvania NOS NIB new in box Sylvania 9JW8

new in box Sylvania 9JW8 / PCF802 tube tested to spec on our Paul Hart-calibrated TV7/U

These tubes have great bass and sparkling highs and Pete Ham's voice is warm and clear as a bell

This lot of five Toshiba-MANUFACTURED 8FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Transconductance was 1890 for Tube One and 2000 for Tube Two where new/nominal is within one standard deviation of 1900

new in box Westinghouse 12EH5 tubes

4 US-Made 6211 Vacuum Tubes Lot Of Four Sylvania NOS NIB new in box Sylvania 9JW8This quad of US made 6211 dual triodes was tested on our Hickok 800 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 2000 1900 micromhos for Tube One and 2000 2000 micromhos for Tube Two. Tubes Three and Four measured 2400 2650 and 2800 3200, respectively. (New 6211s typically test within one to 1. 5 standard deviations of 3600 micromhos and tend to be rather erratic readings wise like their 12AT7 cousins).