HF / RF Double Triode / Buffer HI-FI Audio Preamplifier, NOS Vacuum Tube (9-Pins B9A) Noval Pinnacle. Cross Reference: AA61 6AQ8 6DJ8 6N1 6N1P-EV 6H1П-EB 6N11 6N23P 12AX7 12AT7 12AU7 6922 E82CC E83CC E83S E88CC EE88C ECC40 ECC82 ECC83.
