This is a YAMAHA AG03 audio interface, a standard for streaming and recording. I purchased it used and have been storing it at home for a while. Power-on and operation have been confirmed. The exterior shows some signs of use overall, but there are no major scratches or damage. The accessories (box, instruction manual, etc.) are missing, and the item is only the main unit and cable. Therefore, please understand that there is no operational warranty or returns. Recommended for those who can perform maintenance themselves. Please purchase only if you understand that this is a used item sold as-is. ◼︎Set Contents ・AG03 Audio Interface ・Interface power cable - Brand: YAMAHA - Model Name: AG03 - Function: Audio Mixer - Connection Terminals: USB, AUX, Headset - Input Channels: 2/3 - Effects: COMP/EQ - Monitor Function: Monitor Mute - Power: 48V Phantom Power -------------------‐ The following items are available for an additional fee: ◼︎+5500 yen: 5-cable set for app streamers (Live streamers, Vtuber) Used for TikTok streaming with an iPhone Lightning cable, operation confirmed only with iPhone. I think it can also be used with Android. ・Interface ⇔ PC connection cable ・Lightning charging cable ・PC ⇔ Interface cable ・Earphone cord (black, bonus item) ・Lightning USB camera adapter 2-in-1 iPhone USB adapter (white) (This may be unnecessary for Android users, so please research before purchasing as I am unsure.) ※Some cables have yellowing. -------------------‐ ※Only for those who purchase the entire set, the following will be included as a bonus! ・Pop guard microphone cover (white) ※Operation has been confirmed, but there may be compatibility issues between the PC and cables, so refunds or returns will not be accepted if it does not work or respond. ※Please purchase after confirming and agreeing to no claims and no returns!