Simaudio 260D manual Technical Information, Accurate data retrieval ensures more lifelike

Simaudio Ltd. has been designing and manufacturing innovative, leading-edge audio and video products since 1980. MOON products have been globally recognized for their world-class performance, garnering numerous accolades for this outstanding achievement. Our products are engineered and built in Canada, utilizing advanced, efficient, “green” assembly techniques with strict quality control. Furthermore, our manufacturing processes are part of our philosophy, whereas the high quality and long-life of MOON products are the best way to preserve our environment, avoiding premature obsolesence. MOON products meet or exceed all international requirements for safety, performance and durability. At Simaudio, great music matters. However, great music for a lifetime matters most.

Technical Information

Featuring PLL syncronization, the MOON Alpha Clocking System achieves extremely accurate phasing and much better than average recovery of information from the compact disc. As well, digital clock-signal integrity is dramatically improved. The result is extremely low jitter in the order of less than 10 picoseconds RMS which means the elimination of digital fatigue in the high- frequency region, and therefore a more analog-like, yet very realistic sonic signature. The significant differences, with respect to jitter, between a digital clock signal from the MOON Alpha Clocking System (upper diagram) and a typical digital clock signal (lower diagram):

The MOON 260D use a proprietary transport mechanism employing in-house developed hardware and software. This mechanism, which we named M-ProDrive, is comprised of following components: the disc drawer; the optical laser pickup; the dual-rail apparatus that holds this pickup, the motor which spins the disc; the disc po- sitioning and clamping assembly, the frame which all these components are mounted onto, and finally, both the controller and servo software.

When we developed this mechanism, several key design considerations were implemented to enhance sonic performance: Improved stability of disc’s rota- tional speed was achieved through the use of a very lightweight disc platform. Our disc clamping mechanism minimizes vibrations and uneven rotation. The optical pickup assembly is surrounded by small magnets and housed in an enclosure to dramatically improve tracking. This enclosure is mounted on the aforementioned dual-rail apparatus which prevents any off-axis tilting when the lens moves. All of these features combine to ensure quieter disc rotation.

Some of the other advantages realized by this manufacturing process for the M-ProDriveinclude:

•Reduced jitter

•Better handling of errors resulting from defective or dirty discs

•Improved mechanical reliability

•More accurate data retrieval

•A facility for firmware upgrades

Accurate data retrieval ensures more lifelike

sonic reproduction

When the width of the above digital impulses (A, B, C, D, E, F) are identical, then the phasing between the impulses (1, 2, 3, 4, 5) will all have same width (black vertical bars) , resulting in extremely low phase errors.

When the width of the above digital impulses (A, B, C, D, E, F) are not equal, then the phasing between the impulses (1, 2, 3, 4, 5) will vary noticeably in width (red vertical bars), resulting in significant phase errors.

High-frequencies never sounded so natural ... cymbals so life-like that you’ll want to reach out and touch them

... a genuinely non-fatiguing sound without even a

hint of digital grain.