HEADPHONE AMPLIFIER Headphone amplifier with 4 independent output channels and volume control for each channel. Inputs: stereo L + R 1/4 '' balanced and stereo 1/8 '' (minijack) to connect domestic devices. Outputs: 4 stereo 1/4 '' and one auxiliary 1/8 ''. Switches: MUTE to silence outputs and MONO to convert outputs in mono signal. General volume potentiometer MASTER. Power adapter included (15 VDC)