Studio Audio Mixer 10 Channel Portable Operation check OK Internal reverb is also normal Separate AC adapter included Thank you We will ship quickly using recycled cardboard and air-cushion packaging Thank you The audio mixer can be connected to various audio devices. [Microphone Input]: The studio audio mixer supports various instrument source inputs and a 48V switch, meeting the needs of dynamic condenser microphones. [High Performance]: The sound mixing console can adjust the high and low pitch, with clear highs and deep, mellow lows. The professional DSP digital noise reduction processor automatically filters noise during recording, ensuring smooth playback. [Design]: The sound controller has an LCD color screen and USB plug-and-play functionality, allowing you to connect and use storage devices with a USB interface. Specifications: 235.3cm x 15cm x 8cm / 92.64 inches x 5.91 inches x 3.15 inches