6N1P 61 a-g 6BQ7A vintage triode vacuum tube soviet NOS NEW 100pcs The 6N1P (Russian: 61) is a Russian-made miniature 9-pin medium gain double triode vacuum tube intended for use as a line audio amplifier and cathode driver. Basic data: Uf = 6.3 V, If = 600 mA µ = 35 Ia = 7.5 mA […]