Roland’s GO:MIXER PRO is the easiest way for content creators to connect and mix up to nine audio inputs, including pro-quality powered microphones, guitar/bass and line-level gear. Just plug in, set the volume levels and go; the resulting stereo audio output is sent straight to your smartphone, ready for uploading and sharing. Number of Audio Channels: Input: 9 channels Output: 2 channels Connectors: INSTRUMENT (L/MONO, R) jacks: 1/4-inch phone type LINE IN 1 jack: Stereo miniature phone type LINE IN 2 jack: Stereo miniature phone type GUITAR/BASS jack: 1/4-inch phone type (supports high impedance) PLUG IN MIC jack: Miniature phone type (supports plug-in power) MIC jack: Combo type (XLR, 1/4-inch TRS phone, phantom power DC 48 V, 6 mA max.) MONITOR OUT jack: Stereo miniature phone type USB port: USB Micro-B type Controllers: INSTRUMENT knob GUITAR/BASS knob PLUG IN MIC knob MIC knob MONITOR OUT knob LOOP BACK switch CENTER CANCEL switch PHANTOM POWER switch BATTERY switch Indicators: POWER indicator PEAK indicator Power Supply: USB Bus Power Alkaline battery (AAA, LR03) x 4 Rechargeable Ni-MH battery (AAA, HR03) x 4 Current Draw: 170 mA Battery life for continuous use: Alkaline battery: Approximately 4 hours 30 minutes * When setting the [BATTERY] switch to the "ON" position. * Differs depending on the conditions of use. Compatible Product: Please check the URL for the latest compatible information. Learn more on Roland's Website: