Behringer POWERPLAY P16-M / P16-I / A set of 3 items: P16MB mount for attaching to stands, etc. I purchased it online and used it only 2-3 times. The P16-M comes with a power adapter box. The P16-I comes with a power cable. This is a complete basic set for a recording cue box, so please take it all. 【High-Quality Sound Management】 Behringer's POWERPLAY 16 is an excellent tool for managing 16-channel audio signals. It features an equalizer and volume control, allowing for fine-tuning of sound quality. 【Diverse Connection Options】 It supports XLR, TRS, and USB connections, making it easy to connect to various devices. This makes it very convenient for use in studios and live performances. 【Easy Installation】 It can be easily installed using the included mounting bracket. This allows you to effectively utilize space while placing the necessary functions at your fingertips. Thank you for viewing.