MX121 is the control hub of the finest home theater systems. All current and legacy audio and video sources may be controlled, processed and operated through MX121. An extensive and flexible feature set, allow MX121 based systems to be configured to match the exact needs of the users. Home network ethernet communication is supported so you can stream audio and photos directly from your computer and the internet.The MX121 has the ability to automatically switch power On/Off to McIntosh Power Amplifiers via the Power Control/Trigger connections. Apple AirPlay allows wireless streaming from the iTunes library on any device as well as a rear panel USB input for digital iPod®, iPad®, or iPhone® connection.