Pyle 400-Watt 4-Channel Powered Mixer with Aux (3.5mm) Input, USB/SD Readers, Headphone Jack - PMX402M 4-Channel System Power Mixer - LCD Display (4) Balanced 3-Pin Microphone Inputs (4) 1/4" High Impedance Inputs - Aux (3.5mm) Input Connector Jack - 1/4" Headphone Jack Connect iPod, MP3 Players, iPhone, Smartphones, Tablets, etc. - 1/4" Send/Return Jacks Master System EFFX & EQ Control - 5-Band Graphic Equalizer - Independent Channel Controls RCA (L/R) Record Jacks - USB Flash & SD Card Readers - Size: 15.75" x 12.01" x 7.87"