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Apollo

D/A Converter

A new benchmark in High-End audio

Formats and interfaces

AES/EBU inputs are capable of receiving PCM data up to 24 bits at sampling frequencies up to 192 kHz.

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USB input provides work with PCM data (up to 32 bits at a sampling frequency up to 384 kHz) and DSD stream (DSD64, DSD128, DSD256).

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The heart of the DAC Apollo

IC DAC Asahi Kasei Microdevices AK4490

The DAC module done on the basis of IMS multi-level Delta-Sigma DAC Asahi Kasei Microdevices AK4490 under the "dual mono" (Dual Mono) for each channel using separate independent IC DAC, regenerating the filters, and power supplies.

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Power supply

The power DAC is Apollo from the classic line source with three separate power transformers for maintenance of various modules of DAC. Each power transformer with reduced induction in the magnetic circuit is characterized by extremely low loss of magnetization and a sinusoidal form of magnetizing current.

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Indication

fully static

It does not use any additional processors with their clock generators, and implemented immediate static control of the display elements (led 7-segment identity matrix) on the FPGA and a similar principle, the formation of control signals of the interface module and the DAC module. Such a system is not fundamentally create any noise and does not degrade the quality of the reproduction.

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The principle of a single chassis

The combination of the unique properties of transformers with effective shielding and protection allowed to refuse completely pointless and only high cost the product of two or more structure-options.

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Transmission line of the clock signal at IC DAC is made in the form of a closed microstrip line harmonized in the structure of the multilayer printed circuit Board. This allows you to virtually eliminate the influence of external noise on the clock signal and to bring to the tact converters with jitter less than 50 - 60 femtoseconds.

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The printed circuit Board

Для всех модулей ЦАП Apollo используются многослойные печатные платы из фольгированного материала большой толщины с нормированной диэлектрической проницаемостью по поверхности и повышенной толщиной медной фольги. Платы покрыты антистатической маской, а все переходные отверстия и контактные площадки покрыты иммерсионным золотом. Такое решение позволило оптимизировать трассировку проводников с точки зрения минимизации излучаемых помех и собственной помехозащищенности.

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Case design and support

mechanical vibration-extremely durable design

To ensure maximum shielding properties.

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The point of location of the support legs is determined by computer modeling the interference pattern of sound waves propagating in the bottom of the case for different frequencies.

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