I acquired the Karcher MIK Keyboard few weeks ago and am thrilled. It sounds very authentic and for beginners rich these 54 keys definitely out. There are some nice functions to facilitate a playing-learning sometimes, but without experience, I find this a little too demanding. On the plus side are the different volume levels, as well as the stored rhythms and instruments. Some of the instruments may not sound like your original, but the selection of a total of 100 different instrument sounds and rhythms as many verschiednen is overwhelming. The small display in the center of the control buttons ensures that everything remains clear. The operation generally is mostly very easy and of course, only a few additional features I had to consult the manual. However, I find it a pity that there is no headphone output with this device. There are, in turn, a microphone input, which I personally find less successful because only one music book holder, but not included on the supplied microphone supplied. So you can not sing at the same time into the microphone and playing the keyboard. In addition, you can not vary the volume of the microphone, which makes it superfluous anyway from a certain volume. But that's about the only downside to this unit. That said, I can recommend it to anyone who wants to learn the keyboard playing or is still one of the beginners.