Up for sale is 4Pc
6H1N 6N1P Russian
Solid Disc Getter
made in Russia
Tested Advance Digital Tube Tester Amplitrex AT1000
Sr no: 2822055 T1 IP mAdc = 3.4 uMhos = 3900
T2 IP mAdc = 5.4 uMhos = 4430
Sr no: 2822056 T1 IP mAdc = 3.6 uMhos = 4030
T2 IP mAdc = 3.2 uMhos = 3800
Sr no: 2822060 T1 IP mAdc = 4.6 uMhos = 4300
T2 IP mAdc = 4.4 uMhos = 4180
Sr no: 2822073 T1 IP mAdc = 3.6 uMhos = 4020
T2 IP mAdc = 5.8 uMhos = 4650
“OTK” on a Russian 6H1N tube refers to “Otkel Tekhnicheskogo Kontrolya” (Department of Technical Control) and signifies military-grade quality. The 6H1N is a Russian dual triode vacuum tube, equivalent to the Western ECC88/6DJ8, often used in audio and electronic amplifiers. The “OTK” marking indicates that the tube passed stringent quality control and was produced for military or professional use.
6H1N: This is a Russian dual triode vacuum tube, often called 6N1P.
OTK: This stands for the Soviet/Russian “Department of Technical Control”, a quality assurance mark for military-grade or high-quality equipment.













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