ship from Japan [Hi-Fi Sound] The Donner audio mixer uses a chip designed for dedicated audio processing, enabling signals to be mixed in the case of ultra-low loss. [Multiple input ports] There are 4 stereo channels and can support 8 monaural signal inputs. Two monaural / stereo outputs can mix multiple signals [Various output support] Equipped with normal left and right channel output and stereo output of a single interface. In addition to connecting to the audio interface, you can also insert monitor headphones [Multi-function processing] Not only can you mix multiple device signals, but you can also process input signals such as stereo / monaural and ground / floating to minimize noise. [Adapter included] A 3.5 mm to 6.35 mm adapter and power adapter are included. When you turn on the power, the power button turns green to indicate that it works.