My doubts about whether the little black plastic box should be in a position really to convert a conventional CVBS video signal in a high-quality HDMI signals were absolutely refuted in this product. The free processing is very high. The small size is striking - not more than two matchboxes. AC adapter and USB cable are also included. As a result, the signal conversion of a now rather poor PAL video signal as the source signal to 720p or 1080p on a 55-inch HD TV, for example, are from an unexpectedly sharp, rich in detail and color fidelity image. The sound is good as expected and comes as a stereo signal. The price-performance ratio is definitely - rather manufacturers, you've done well - more so - strong buy recommendation !!!