Matched Pair General Electric GE 6C4 6C4WA Vacuum Tubes Milspec NOS NIB 1821A NOS NIB

Matched Pair General Electric GE 6C4 6C4WA Vacuum Tubes Milspec NOS NIB 1821A NOS NIBThis perfectly matched pair of new old stock, new in box 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 69 where minimum (65%) is 55. 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 67 05 67

new in box 1X2 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Cunningham 35/51 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box CBS 6AK6 tubes tested to spec on our Paul Hart-calibrated TV7/U

The disks are well-made and quiet with just a few pops and ticks here and there

These tubes are very-well-built and extremely-rugged

new in box milspec RCA JAN-CRC-884 / VT-222 tubes tested to spec on our Paul Hart-calibrated TV7/U

I am playing them in one my Radio Craftsmen RC2 mono blocks as I write and they sound super even though they test poorly and have that oxide isse

This LP is in very-good shape with very little noise

This perfectly-matched pair of milspec GE 6C4 6C4WA triodes was tested on our Paul Hart-calibrated TV7/U for shorts

210 5213 and no provenance/date codes

This album sounds good and has pops and ticks that are only discernible in quiet passages

Tube One measured 95%/93% and 95%/94% for Tube Two