Audio Mixer Distributor Stereo Signal Selector Switcher Headphones

1 mixer board or 1 Board with case(optional). Stereo audio two-way input four-way output, can directly push four headphones or external amplifiers do not affect each other. Using the high-current op amp NJM4556A from Japan JRC, the maximum output current is 70ma, which can provide good large dynamic fidelity output.