NAD C558 Manual Belt-Drive Turntable

Sophisticated Technology

When it comes to the C558, a sophisticated power supply was chosen that transforms the AC alternating voltage of your wall socket into a pure DC voltage. The DC voltage is then regenerated into a precise AC voltage that powers a precision clock motor to achieve nearly perfect speed consistency and smoothness. The motor itself is isolated from noise and voltage fluctuations that occur in the unfiltered AC mains that can cause instability in the motor. The motor uses a specially developed rubber belt that is flat ground for precision and drives a non-resonant sub-platter that is also precisely machined for smooth rotation. This sits in a brass bearing with a hardened steel shaft. All of these parts are carefully developed to work together to provide a remarkably stable and precise rotation of the disc.

The C558’s tonearm also offers a similar level of careful engineering and development. At 9” long it offers low tracking distortion while maintaining rigidity and low mass required to stabilize the cartridge. By allowing VTF and Azimuth adjustment we get precise tracking with low distortion and record wear.

The glass platter and massive plinth combine to extract all the energy from the disc