NB-BlackSilentPro The NB-BlackSilentPro-series was developed in close cooperation with the Hardwareluxx Community. Our leading technology and user wishes made the production of this extraordinary series possible. Furthermore, it excels with its high quality components in a classic design. New position invariant magnetic bearing, the excellent NB-EKA-Plus-II drive with very low start voltage, a cable management system with pluggable cables and vibration-free assembly material with sealing frame make a package that goes unrivalled. Available in the sizes 92/120 and 140 mm, with different performance levels.