Tested on a NEW Digital Maxi Matcher Power II Tube Tester. I use the DIGITAL Maxi Matcher Power II Tester. Maxi Matcher uses their own proprietary (GM) Micromhos number...
Remake of the Classical GE6550A - TAD 6550A-STR REDBASE - depth, power & detail in perfection. The breathtakingly large and precise sound as well as its straightforward appearance make...
100% Guaranteed TubesAll tubes are tested for Gm, shorts, leaks, gas, and noise on one of our vintage, calibrated, or state of the art digital tube testers. Buy from...
For sale is a Matched Pair General Electric 6550A tubes Triple getter. Made in USA. All tubes are also tested for noise and microphonics. Tests very strong at near...
I have several of these tubes, Please let me know how many you want. This GE 6550A power tube is a vintage part that has been well-maintained and tested...
100% Guaranteed TubesAll tubes are tested for Gm, shorts, leaks, gas, and noise on one of our vintage, calibrated, or state of the art digital tube testers. Buy from...
100% Guaranteed TubesAll tubes are tested for Gm, shorts, leaks, gas, and noise on one of our vintage, calibrated, or state of the art digital tube testers. Buy from...
Welded grey plate with copper shield Support rods, dual overhead halo getters, 3 Mica construction, and a KT 88 style envelope. This tube is a Electro-Harmonix power tube. 6550A...
New Plate Current Matched Sextet of Svetlana 6550C Vacuum Tubes. Will work in place of: 6550C, 6550, KT88, 6550A. In addition, power tubes are tested/matched by plate current (Ip)...
Remake of the Classical GE6550A - TAD 6550A-STR REDBASE - depth, power & detail in perfection. The breathtakingly large and precise sound as well as its straightforward appearance make...