Rosewill R-Studio MINI RUBIC-BK Bluetooth Portable Speaker, with NFC and Handsfree Mic
Maybe I'm easily impressed, but this tiny cube is really great! It puts out a very strong and clear sound.  I'm a bit hard of hearing so the volume from my tablet speakers just were not enough. This little cube is perfect for me. I am bad about reading instructions and this device is so intuitive that I was playing music from my tablet and my phone within moments of opening the package. Easy!  By the way, the instructions are clear and simple.