The delivery of the product has lasted more than 3 weeks. It is then therefore without guidance. With a little experience, the functions can figure out pretty quickly. The access of the hard disk is very, very slow - a skipping of tracks only works a time lag: Skip to wait, wait, next track. This is very disturbing. The backlight is constantly changing its color, although I have turned off in the system settings. From the processing, he makes a rather unstable impression. I do not think the players holding long. I would buy this product again but rather invest in a hochpreisigeres product.