Rockna Wavedream DAC The sound you've...
The sound you've waited for, AND BEYOND.
Wavedream DAC are completely based on a single piece of programmable silicon: an FPGA.
Very flexible system that protects against obsolescence.
PERSONALIZED DIGITAL FILTERS
Dedicated dac modules called RD-0 (Signature - 27 bits) and RD-1 (Edition - 26 bits)
The preamplifier function.
Completely symmetrical design
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We are proud to present our current flagship in digital audio reproduction. We believe it has the right ingredients to produce a sound that will honour it’s name. In the good tradition established by it’s predecessor, the Wavedream continues to push the limits of performance, design and sound quality. The ingredients, innovations, technology and features of the product are presented below.
We always thought that high-end audio should be everything about innovation. Playing around with off-the-shelf available chips is fun and certainly a good and economic way to produce good sound. But once you want to design a cutting-edge product, the off-the-shelf approach doesn’t apply. Naturally, a custom solution, freed from the limitation of the available chipsets, come into place, allowing us to design and build from the scratch an entire digital audio system.
All building blocks of the Wavedream DAC concernig digital processing are built entirely on a single piece of programmable silicon – a FPGA . With a FPGA, it’s internal hardware architecture could be described by a piece of software (actually, a very complex one). When upgrading the Wavedream with new firmware, you actually change it’s hardware. This system allows great flexibility, obsolescence protection and let us improve the sound of your dac by changing it’s internal architecture, or add new cool features, or improve the existing ones.
The clock is the heart of a digital reproduction system. It’s accuracy and jitter levels are critical in regard of sound quality. Only a very good clock system can make the way to the analog sound on the output of your DAC. If the clock is flawed, digital harshness will occur and the analog feeling of the music will be severely altered. Apart from the performance of the clock itself, equally critical is the construction of the clock tree (the clock distribution architecture) inside the DAC. The jitter amount that really counts it’s not only the performance of the clock itself – but the clock which actually enters the dac and is used for conversion – let’s call it the conversion clock. The conversion clock that enters the dac section relies on the clock tree, which is usually not just routing, but in most cases conditioning, altering it’s quality. A poorly designed clock tree can degrade significantly the clock quality entering the d/a section, even if the source clock has great performance.
With these facts in mind, we designed for the Wavedream an advanced clock system called the femtovox. With femtovox in place, one is assured that only extremely small amounts of jitter are present at the dac conversion clock input. It’s unique architecture employs that conversion clock is directly synthesised at the dac input, without any conditioning, giving constant jitter performance at any sample rate. The conversion clock is controlled with 1 ppb precision, while exhibiting about 300 fS of jitter. The smallest jitter figure in the world? No. The smallest jitter figure where actually matters? Probably.
On the dac menu can be found a series of useful features. Let’s take a short walkthrough.
|S/PDIF||24bit 44.1-192k PCM , DoP DSD64|
|AES/EBU||24bit 44.1-192k PCM, DoP DSD64|
|USB||32bit 44.1-384k PCM, DSD64-512|
|HD-Link1 (LVDS)||32bit 44.1-384k PCM, DSD64-512|
|HD-Link2 (LVDS)||32bit 44.1-384k PCM, DSD64-512|
OUTPUTS (Wavedream Edition)THD+N (at - 6dB): 0.003% or -90 dB S/N ratio (0 dB): 122 dB Dynamic range: 122 dB Output impedance: 0.5 ohms Max. voltage: 6.6Vpp(SE); 13.2Vpp(XLR)
OUTPUTS (Wavedream Signature)THD+N (at -6db): 0.0008% or -102 dB S/N ratio (0 dB): 132 dB Dynamic range: 132 dB Output impedance: 0.5 ohms Max. voltage: 10Vpp(SE); 20Vpp(XLR)
|High-frequency asynchronous capture digital inputs:||560MHz sampling|
|Memory-based PLL, digital domain only:||300 fS jitter|
|Custom digital filters:||linear, minimum and hybrid phase, 16x|
|Filter type: (advanced convolution)||Parks-McClellan, 4820 taps|
|Mathematical precision:||68 bit INTEGER|
|Stopband attenuation:||- 145 dB|
|Passband ripple:||0,0001 dB|
|Dither:||Triangular shaped distribution|
|Volume control:||custom multiplier array, 256 steps, 0.5 dB step|
|128x64 yellow oled display, dimmable in 8 steps|
|4 control switches|
|IR remote control|
|Firmware upgrade via usb|
|Dimensions: 440 x 360 x 90 mm|
|Weight (net): 7.8 Kg|
|Wavedream Edition DAC – SE (black/silver)||6.490|
|Wavedream Edition DAC – XLR (black/silver)||8.490|
|Wavedream Signature DAC – SE (black/silver)||9.900|
|Wavedream Signature DAC – XLR (black/silver)||15.900|