I bought this mix because I wanted to mix signals from PC (via USB), my guitar pedalboard (with preamp and cabinet simulation) and send it to headphones or Hi-fi system. Also the option of Bluetooth connection impressed me.
Secondary use of this mini mix is with my PA as basic mixer for garden parties, etc. It can take microphone and I have possibility to play music from various sources (notebook, phone via Bluetooth, mp3 player, etc.).
PROS: it is f*cking awesome product for that price
CONS: it has RCA connectors for line signals and Main outs, so I must use reductions RCA/6,3mm TS.
I highly recommend this mix, because I never had problems with it and it is working realy well.