WADIA Technical Papers

Wadia Technical Bulletin, March 2001: Up-sampling and Wadia Technology
Digital up-sampling has been getting a lot of attention recently, and for good reason: up-sampling can provide tremendous sonic benefit. At Wadia we have been incorporating patented, high-performance synchronous up-sampling systems into our CD Players and Decoding Computers since 1988. We welcome the new attention being paid to up-sampling and would like to explain the technology behind it.

Swift Current™
This proprietary circuit performs the sonically critical current-to-voltage conversion with no negative feedback, resulting in demonstrably superior sound quality.

ClockLink™
ClockLink™ is the most recent and effective jitter-reduction method in Wadia's history. ClockLink™ effectively eliminates the most sonically damaging sources of jitter from compact disc playback systems.

Digital Volume Control
The WADIA Volume Control was developed to take advantage of one of the most compelling advantages of Compact Discs: digital audio signals can be processed without additive losses and distortion that are inevitable in analog processing.

Direct-Connect™ Technology
Since 1992, Wadia has been developing and refining technology to take maximum advantage of this rule. Direct-Connect™ system takes us one step closer to the ideal by eliminating the need for a preamplifier in the audio chain.

Resolution Enhancement
Wadia's Resolution Enhancement System, as implemented in the Wadia Transports, improves performance, raising the capability of Compact Disc playback another significant step. Wadia's Resolution Enhancement Systems uses carefully constructed dither, or random noise, to improve digital-to-analog converter resolution, reduce correlated jitter, and increase the "self-similar" nature of the signal, more closely matching the character of live music.

Also see our guide to Wadia Technology