I use this on my iMac boxes on the one hand Logic Pro Home Recording mix, and on the other hand to hear simple and comfortable music. In the living room are the A-20, the slightly larger of the two previous models. The I navigate to a USB radio link, the A-100 directly via USB. Both works flawlessly! The device works. Are the boxes digitally linked, everything goes like by itself. Practically compared to its predecessor is that now the volume and tone controls are digitally linked, so that the control with the small remote control always immediately controls both boxes. In this way you can save a stereo. In conjunction with iTunes and the iTunes control via smartphone or tablet that is all a super-comfortable matter. The sound of the speakers is just great. The strength of the box is in the clean image of the stereo and the sound image. Perform the Klangcharakterisitika the instruments simply very closely before ears. The size of the rooms, the timbre of the instruments, the color of the piano lacquer ... ;-) everything builds up in the mind's eye and predestined the boxes for the discerning home recorder and unpretentious music connoisseurs. The box also has enough bass if you're not just techno freak, you certainly do not need a subwoofer. So if you want to make, yet affordable komprmisslos from his PC a complete sound system that can go wrong with these boxes nothing!