Matched Pair General Electric GE 6C4 6C4WA Vacuum Tubes Milspec NOS NIB Zenith Drawer It has very-light surface noise

It has very-light surface noise

an O-getter

This has been the best-sounding LP I played today on Thanksgiving

wire snubbers for lowered microphonics

new in box Zenith 6DQ4 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair General Electric GE 6C4 6C4WA Vacuum Tubes Milspec NOS NIB Zenith Drawer It has very-light surface noiseThis perfectly matched pair of milspec GE 6C4 6C4WA triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Both tubes measured 72 where minimum (65%) is 55 and 100% 85. They have gray plates; top O getters and two additional support rods for increased ruggedness and microphony suppression. These tubes have acid etched codes and designations as well as silk screened 68 26 188 5 67 50