6CC41 is a double triode with high amplification factor and separated cathodes, suitable for lf amplifiers. It is direct replacement for the russian 6N2P (6H2П) and chinese 6N2 tubes. Electrically it is also very similar to the ECC83/12AX7, but it has different pin-out. Tubes were made in former Czechoslovakia - Tesla factory in 1959 (LE and LF codes). Long time stored items. Tested on BM215A.