TAD Class-A Converter Tri-Tone, Output Stage Tubes Converter, Allows the use of EL84 tubes instead of 6L6GC, 5881, EL34, KT66 and 6V6GT power amp tubes, Class-A Converter Tri-Tone, TB-TH/2, 1 Pair, The EL84 runs in pure Class A mode, Volume is reduced and thus the sound of a wide open amplifier is reached earlier., Plug & Play, No adjustments and no conversion necessary, Power: 4-5 Watt per adapter / 8-10 Watt per pair, Height (without pins, including tube): 12 cm, Includes EL84 tubes, Made in Germany@+*Note:* 1 cm of air should be left between the tip of the EL84 and the housing to ensure installation and ventilation!