User manual DENON DCD-685

[. . . ] In addition to the data expansion of existing AL24 Processing Plus technology, up-converted sampling is used to achieve natural interpolation without losing original data. Greater optimisation in digital processing algorithm has also been achieved for ringing-free pulse response and for pulsive music data and attack sounds. This enhances naturalness in the reproduction of spatial information such as the delicate nuances in the music, the locations of the performers, and the breadth, height, and depth of the concert hall. [. . . ] In addition, the control firmware (for the signal processor and loader drive circuit) to operate these mechanisms was also developed by DENON. These technologies as well as DENON's track record of supplying mechanism engines to other manufacturers have earned high marks. Since Super Audio CDs rotate at high speed during playback, the length of the motor shaft has been considerably shortened. A long-life brushless motor capable of withstanding vibration caused by high-speed rotation has also been used. In addition, thorough consideration has been given to mechanical deviations in the optical axis of the laser beam being irradiated by the pickup onto the disc, mechanical unevenness in the base of the pickup mechanism, and the mechanical inclination of the brushless motor shaft. The DCD-685's mechanism uses a vibration-resistant coating that was used in the highly-acclaimed SVH loader. In addition to an optimum mechanism base floating design, the DCD-685 features a thorough hybrid vibration-resistant construction based on vibration analyses in order to suppress the resonance of components caused by disc rotation. I High-accuracy master clock oscillator, to suppress jitter and noise The importance of a master clock has been growing with the spread of high-grade, high-sampling audio sources such as Super Audio CD and DVD-Audio and advances in high sampling and signal processing during CD playback. The DCD-685 features a triple floating construction from the base of the power supply to the transformer. (1) Vibration-resistant construction between the transformer and the case: A base filling material is first poured onto the bottom of the cast aluminum case, and the power supply transformer is placed into the case after it hardens. The filling material is then inserted again. (2) Suppression of vibration onto the secured base: Shock absorbing material is inserted between the transformer case and the cast aluminum transformer base. (3) Control of vibration transmitted to the chassis in all frequencies: Four types of shock absorbing materials of different resonance frequencies have been combined between the transformer base and the chassis. DCD-685 I Thoroughly vibration-resistant construction To prevent external vibration and minute internal vibration from adversely affecting sound quality, the DCD-685 has been engineered to be thoroughly vibration resistant. · 4-layer bottom plate construction · Cast iron insulator · Hybrid construction for all panels · Vibration-resistant PC board design · Flexible input/output, also operates as high-grade D/A converter · Pure Direct mode I European Sound Tune With the advance of Super Audio CD and other new formats, fans of high-end audio are demanding refinements in the quality of sound from audio equipment. European audiophiles are particularly keen to reproduce the naturalness of live sound, including transparency, precise localisation, and a thoroughly realistic ambience. The parts for the DCD-685 have been carefully selected for their ability to deliver superior sound quality. [. . . ] The parts for the DCD-685 have been carefully selected for their ability to deliver superior sound quality. Since some of these parts are hand-made, they are difficult to procure and are currently used only by DENON. The DCD-685 has a large number of top-grade capacitors, for instance, that use a natural silk textile on the inside and high-purity copper wires. [. . . ]