The improved sound quality manifests as a darker, quieter background between notes and a corresponding increased expression of detail. Since the LDRx sound is clear and detailed to begin with, this is quite a remarkable evolution.
The upgrade replaces internal linear power regulation with a precision high performance switched mode power dc regulator. The net result is reduced ripple and an overall reduction in background noise. Even with the optical isolation inherent with LDRs, a reduction in power supply noise is beneficial. (more…)