Explore our collection of Double Triode 41 items
American-made with O-getter, tested on L3-3, NIB with original packaging
Military-grade subminiature with OTK stamp, rhombus marking, high reliability, 10-tube lot
NEVZ 1970s military-selected, red tip, getter on two wires, matched pair, equiv. to ECC99
Reflector factory, set of 4 with OTK stamp, same date code, original boxes, equiv. to 6SL7/1579
Voskhod rocket logo, set of 6 tested/matched, equiv. to E88CC/6DJ8/6922, L3-3 tested
Reflector factory, set of 4 same date, enhanced version, equiv. to 2C51/6385/6CC42/396A
Military-grade subminiature with OTK stamp, same date code, rhombus marking, set of 4
Black box anode, triple mica, 1960s production, matched pair, similar to CCa/6N1P-E/E88CC
MELZ rare metal base construction, matched pair tested on L3-3, equiv. to 6SL7/1579
Reflector factory matched quad tested on L3-3, equivalent to 6SL7/1579 preamp tubes
NEVZ Novosibirsk factory, matched pair tested on L3-3, equivalent to 6SN7/1578/ECC32
Tested matched pair, equivalent to E88CC/ECC88/6DJ8/6922 preamp tubes