by DJ Vintage on 26 Mar 2015, 14:36
Indeed, it's just a dumb piece of technology. EXACTLY the same as a splitter cable, but without the cable and thus more sturdy and less likely to fail (i.e. broken cable). And easier to carry around in your pocket.
Plug in your smarphone earphones and borrow a mini-jack to PA cable from whereever you are and you are playing live with your phone!