The processing of the Sony MDR-1ADAC High Resolution headphones with S-Master digital amplifier HX is very good. The connections very comfortable, from the USB port to 3.5mm jack including a volume control, microphone shutdown and drivers, everything is available. The sound quality of the Sony MDR-1ADAC is super world class. The headset is characterized both by a superb sound, as well as by a very comfortable fit. Both deep bass, as well as the highs are reproduced cleanly. It sits perfectly and for me the headphones is sufficiently large. Not only is the packaging, which is somewhat exaggerated for my taste, but the entire headset is very high quality, precisely Sony world-class technology. The leatherette really very soft and the cushions are very good. The shield outwards is also good, you can hear no noise from the outside. Everything in a super world-class I can the Sony MDR-1ADAC High Resolution headphones only therefore recommend this 5 star.