Auralic Sirius G2.1 - Upsampling Processor
Auralic Sirius G2.1 - Upsampling Processor
As a specialized enhancement product, SIRIUS G2.1 stands as the fourth addition to the award-winning G2.1 Series of AURALiC products. As a system, the G2.1 stack, comprised of ARIES G2.1, VEGA G2.1, LEO GX.1 and SIRIUS G2.1 now represent one of the most advanced digital sources available for your high-performance system today. SIRIUS G2.1 improves and optimizes signals from all sources, whether they are high-resolution files or streams from an inferior source or format. With SIRIUS G2.1, compressed, lossy, and poor recordings all have the potential to be improved, thereby upgrading your overall experience. Because SIRIUS G2.1 utilizes an open standard protocol, it can also be connected to any brand of DAC, delivering a global variety of sample rates and formats among other functions and features. SIRIUS G2.1 will provide universal balance to a world of varied formats, resolutions, DAC chip topologies, and algorithm types.
All DACs are built with a “sweet-spot,” a point where each DAC circuit excels at a resolution or format. DAC circuits built for DSD playback sound better when playing DSD and PCM DAC topologies perform better when fed PCM. By resampling to a format within the DAC’s “sweet spot,” the chip is allowed to play to its strengths, by lessening the processing requirement of the DAC.
A World First
SIRIUS G2.1 provides multiple inputs and outputs, allowing you to connect to a variety of digital sources and DACs. AURALiC’s spirit of innovation continues to put forth market-first features, as exemplified by SIRIUS G2.1’s unique ability to deliver an upsampled DSD signal to any compatible USB DAC, the first product in the world to do so.
Optimize by Equalizing
The most important factor affecting the quality of playback in your system is not the cables, components, or speakers, but instead the room in which you play your music. SIRIUS G2.1 can compensate for the room with its 8-band parametric equalizer feature, allowing you to optimize for your environment without spending tens of thousands on a complete room build or renovation.
Perfect the Imperfect
SIRIUS G2.1 offers a speaker placement function to compensate for real-world problems, allowing you to deal with barriers to perfect sound in the digital domain. While it’s necessary to place your speakers as best you can in the room first, our speaker placement function could mean the difference between poor and great sound in a less-than pristine environment.
Resample Your Experience
All digital products contain some form of sampling engine. As a separate device, SIRIUS G2.1 sets itself apart by focusing all of its energy on digital signal processing strength, using advanced resampling techniques to convert between any and all sampling rates. You’ll be able to further customize the sound of your digital sources when you choose from four distinct digital filters thanks our very own Flexible Filter Mode Technology. All of the above is done with uncommonly low distortion levels, potentially down to a staggering -170dB, which will also help keep the SIRIUS G2.1 virtually invisible in the signal path.
The Power of Digital Processing
SIRIUS G2.1 is powered by the AURALiC Proteus G2 Co-Processing Platform; which harnesses a Xilinx XC7A200T FPGA chip at its heart, bolstered by 512 MB of DDR3 memory. This FPGA chip contains more than 200,000 logic cells and 740 DSP slices, all combining to provide unparalleled levels of data processing capability. SIRIUS G2.1’s computational power and efficiency are achieved in part because of the design decision to employ a dual-processing platform structure, which doubles capacity. While an AURALiC Tesla G1 handles hardware control, the Proteus G2 focuses its efforts on music data processing.
Specifications
Audio Inputs
USB Audio (Up to 384K/32bit, DSD512)*
AES/EBU (Up to 192K/24bit, DSD64 via DoP)
Coaxial (Up to 192K/24bit, DSD64 via DoP)
TOSLINK (Up to 192K/24bit, DSD64 via DoP)
Audio Outputs
USB Audio (Up to 384K/32bit, DSD512)**
AES/EBU (Up to 192K/24bit, DSD64 via DoP)
Coaxial (Up to 192K/24bit, DSD64 via DoP)
TOSLINK (Up to 192K/24bit, DSD64 via DoP)
Benchmark***
THD+N: <-165dB (Resample to PCM 44.1K - 384K)
THD+N: <-155dB (Resample to DSD128 - DSD512)
THD+N: <-150dB (Resample to DSD64)
Processing Features
Signal Reclock and Jitter Removal****
PCM and DSD Resampler
8-Band Parametric Equalizer
Speaker Placement Compensation
High Precision Digital Volume Control
Processing Platform
AURALiC Tesla G1 for general hardware control
AURALiC Proteus G2 for music signal processing
Power Supply
Triple-Channel Purer-Power internal linear power supply, 10uV low noise design for audio circuits
Internal Clock
Triple Femto Clocks for Digital Outputs, USB Output and Proteus G2
Noise Elimination
Unity Chassis II with copper EMI shieling enclosure
Network
Gigabit Ethernet (For firmware upgrade use)
Power Consumption
50W at max.
Dimensions - W x D x H
13.4 x 12.6 x 3.7 in. (34cm x 32cm x 9.6cm)
Weight
21.0 lbs (9.5kg)
Product Finishing
Anodized aluminum case in matte black with copper EMI shielding enclosure.
Contents
AURALiC SIRIUS G2.1 Upsampling Processor
Power cord
USB Cable
Lightning-Link Cable
User's guide