Gain: 3.5 dB Inputs and outputs: 3.5 mm stereo interfaces, twochannel signal Power: DC 5V, static current 100 mA Internal power design: builtin isolated booster power supply converts 5V to / 9V to power the internal circuit Power quality: although the power supply section has been optimized and filtered, it is recommended to use a quality power supply to achieve clear and pleasant sound without interference Output configuration: one input and two simultaneous outputs; the output can be connected to audio equipment such as headphones or audio amplifiers; volume can be adjusted independently Use scenarios Share a single audio source with two listening devices at once, with independent volume control for each output Route to a headphone set and a small audio amplifier simultaneously for monitoring and playback without crossinterference In a home studio or classroom, distribute the same audio to multiple listeners while maintaining individual level adjustments for each output