Thank you for viewing. This is the Roland GO:MIXER PRO, an audio mixer for smartphones. It's very convenient equipment for recording "singing with guitar" or "singingしてみた" on your smartphone, as well as for high-quality live streaming (Instagram Live, YouTube, etc.). 【Condition】 ・There are no noticeable scratches or stains, and it is in relatively clean condition. ・Operation has been confirmed. (Confirmed with MacBook Pro → logic pro x) 【Included Items】 All items in the photos are included. ・Main unit ・2 connection cables (※Please check if they are compatible with your smartphone) ・Instruction manual ・Outer box 【Features】 ・Powered by batteries or bus power from your smartphone. ・You can connect a vocal microphone, guitar, keyboard, etc. simultaneously and easily stream with high sound quality. ・Phantom power compatible, so you can also use condenser microphones. 【Please Note】 ・This is not the latest "PRO-X" model. ・Please understand that this is a used item before purchasing. Instant purchase is OK. I will pack it carefully and ship it.