because my house is very small and the neighbor often stresses wenns too loud I was looking a long time for a small but powerful portable speakers with the highest quality (a la Bose). And now the time has come. The final impetus brought me this video [.....]. And it's really true, the Denon is better (had the Bose short loan). MP3 player I use the smart phone Meizu MX3, with one of the best sound chips on the market. The box and the smartphone (there are now the MX4 with an even better chip [.....]) can all audiophiles dancing in the triangle. Be honest, more quality for the money can be found nowhere;)