Compact format audio mixer with 4 mono input channels and a stereo line input. Each mono channel has a combo XLR / jack input with individually switchable mic / instrument impedance and +48V phantom power for the XLR. Input channels have High / Low EQ and Pan controls and mono channels also have Effects level to vary the amount of internal digital delay effect added for vocals or instruments. An internal player / recorder with backlit display can accept a USB memory stick containing compressed audio files in various formats or alternatively connect to a smart phone via Bluetooth for wireless link. Output is delivered on a pair of balanced XLR connectors and offers very low noise operation for high quality studio or live performances.