DUDE - miniature 5 channel mixer & more
Dude is a portable battery operated 5 channel audio mixer with mini jack inputs and output. Each channel has a dedicated mute button and up to +20dB gain to boost weak signals and saturate line level signals. It is a monophonic mixer but can drive your headphones and therefore its perfect for small portable rigs or submixes on stage.
more info : http://www.bastl-instruments.com/instruments/dude/
music by Václav a.k.a. Paseka : https://soundcloud.com/pasekacz