MAXTOMARS&reg; N8 4 Stereo / 8 Mono Channel, Mini Mixer 8-Channel 1/4" Inputs and Outputs Mini Mixer, AC Adapter included, or use Battery, with mono/stereo mode 8 Channels Mini Mixer, AC adapter includes (US Plug), Can also use 9V Battery Two modes of operation: Stereo mode (4 stereo channel, Note: Need Stereo Cables!) & Mono mode (8 mono channel) Mini Mixer, Simple Use, Portable & Convenient Carrying Input 110V, 60Hz, 0.30A Max; Output 48V, DC400mA For Home Audio, Self-made Music, Studio, Concert, Party, Bars, KTV, Meeting, Speech, etc.