This is a set including a YAMAHA 10-channel mixing console audio interface MG10XU and a BMS10A adapter (genuine YAMAHA) for mounting on a microphone stand. The MG10XU is a 10-channel mixing console equipped with 24 high-quality digital effects. Unfortunately, I am selling it to organize my equipment. The exterior is in relatively clean condition, with no noticeable stains. However, I am a smoker and used it in a smoking room, so there might be a tobacco smell. I have wiped it down with a nicotine-removing cleaner, but if you are concerned, you might want to refrain from purchasing it (I don't notice it myself...). Here's the product description: Number of channels: 10 Product dimensions: 29.4 depth x 24.4 width x 7.1 height cm Product weight: 2100 grams Maximum 4 Mic / 10 Line inputs (4 mono + 3 stereo), 1 stereo bus, 1 AUX (including FX) Equipped with "D-PRE" microphone preamps, 1-knob compressor, 24 high-quality digital effects by SPX, 24-bit / 192kHz 2in / 2out USB interface function, Compatible with iPhone (iOS7 or later) / iPad (2nd generation or later) / iPad Camera Connection Kit / Lightning - USB camera adapter Cubase AI (provided as a download), +48V phantom power, metal chassis Included items: AC adapter, instruction manual (copy) ■YAMAHA BMS10A microphone stand adapter - 1 unit By using the BMS-10A, you can mount mixers, speakers, etc. on a microphone stand. Compatible models: EMX2, S15, S15W, MS101-3, MSP3, MG10XU, MG06X, AG03 Thank you for your interest.