Source: Press Release, Last Accessed: 2023/01/31

The TAD-D700 incorporates the third-generation Ultra-High-Precision Crystal Generator (UPCG) and other performance enhancements to replace its predecessor, the commercially and critically acclaimed TAD-D600, introduced in 2010.
According to the press release, to develop the UPCG circuitry, TAD have refined the physical characteristics of the technology originally developed for high-speed digital communication base stations for achieving high C/N performance. A further tweaking has been made to the circuitry through a series of real-world listening evaluations. The result is an unprecedented level of accuracy in reproducing signals read out from a CD or SACD, as well as signals fed from external sources, the company says. In the third-generation UPCG, the oscillator has been upgraded to one with SC-cut crystal to reduce phase noise and achieve even greater audio and C/N performance.
The D700’s power supply unit is physically separated from the main unit. This design prevents vibrations and leakage magnetic flux from the transformer from affecting the disc-drive unit and audio circuit inside the main unit.
TAD’s pursuit of simplicity has culminated in a newly developed current-feedback amplifier that is incorporated into an I/V converter with FET devices—hand-selected and paired in its input stage. The new player features parallel-connected twin Burr-Brown 192-kHz, 24-bit D/A converters. The D700 is equipped with a high-precision sampling-rate converter that works with the Ultra-High C/N Master Clock Circuit to re-clock digital inputs. This allows the D700 to double as a high-performance stand-alone D/A converter capable of processing digital signals up to 192 kHz and 24 bit.
The D700 boasts an upgraded CD/SACD transport with a high-precision loading mechanism that opens and closes the disc tray with little vibration, thanks to built-in metal bearings. The pickup employs an infinite conjugate optics system that ensures both stable operation and high-precision signal readout. The rigid disc tray is made of machined aluminum to suppress vibration and has a vibration-dampening black coating to prevent the diffusion of a laser beam and achieve greater accuracy in signal readout.

For more information: https://www.technicalaudiodevices.com/

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