Unique vintage tech 257 total items
Tested tubes with 70-90% brightness, equivalent to EM80/6BR5 tuning indicators
Visual tuning indicators tested on L3-3, fully working. Some segments may show slight brightness variation depending on system voltage.
Svetlana factory, tested at 70-80% brightness, equivalent to 6G5G/6E5G tuning indicators
Svetlana matched pair with same date, tested, similar to 6BM8/ECL82 triode-pentode combo
Soviet subminiature double triodes with OTK stamp, 2000hr durability, low frequency amplification
Tested matched pair, equivalent to E88CC/ECC88/6DJ8/6922 preamp tubes
Matched low-noise double triodes from 1975 production, tested on L3-3 and selected for audio and RF use
Triple mica construction, 5000hr life, tested & matched, similar to 12AX7/ECC83
Black box anode, triple mica, 1960s production, matched pair, similar to CCa/6N1P-E/E88CC
Foton 1960s, square getter, gold grid, matched pair, similar to ECC99/E182CC/6CG7
Vintage 1950s metal base double triodes, tested on L3-3 with measurements attached. Premium matched pair from legendary MELZ factory.
NEVZ factory, matched pair with test data, equivalent to 6SN7/1578/ECC32