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2 X 6211 TUBE. NEW OLD STOCK.
BRAND: TELEFUNKEN. 1960s PRODUCTION.
GREY PLATES, HALO GETTER, GOLD PIN, MATCHED PAIR, BALANCED SYSTEMS.
6211 IS A COMPUTER GRADE TUBE ESTRUCTURALY AND ELECTRICALLY IDENTICAL TO ECC802S. HAS DIFFERENT AMPLIFICATION FACTORS: 6211: 27 TO 31; ECC82 / 12AU7: 18 TO 19.
TESTED IN COMPUTERIZED ROEHRENTEST TUBE TESTER:
120/120% 5.525/5.502mA EMISSION (EM) 3.66/3.9mA/V TRANSCONDUCTANCE (GM)
124/126% 5.72/5.78mA EMISSION (EM) 3.84/4.29mA/V TRANSCONDUCTANCE (GM)
CH164U1