4x Mullard EL84 Valves Tubes R9F 1959 Eq N709 6BQ5 CV2975

Date Code: rX1 R9F, rX1 R9F, rX1 R9F, rX1 R9F. 4x Mullard EL84 Valves. This valve has also been tested in amplifier without any noise. NOS specification: Ia = 48(mA), gm = 11.3(mA/V). Ia = 37(mA), gm = 8.4(mA/V).

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