AURALiC 串流皇者 G2.2！

AURALiC 在今年夏季帶來全新世代G2.2 系列串流及解碼產 品，包括純串流播放器 Aries G2.2 及串流解碼器Vega G2.2

全新世代G2.2 系列均搭載了 AURALiC 獨家開發的全新 Tesla G3 運算平台，採用 64bit 運算架構，處理效能高達上 一代 Tesla 平台八倍！內存增加至 4Gb，全新的 Direct Memory Access Technology 技術令線路中的音訊傳輸更直接 ，令 Tesla G3 運算平台較上一代的訊號延遲及時基誤差大幅 降低 90%

Aries G2.2 配備全新設計的第二代 Galvanic USB Isolation模 組令線路間干擾降低，全新 Purer-Power 超低嗓音電源模組 ，提供上一代兩倍的電力供應，4T SSD 版本使用存取速度 極高的 NVMe SSD，減低訊號傳輸誤差，另外亦可透過 USB3.0 接口外接 USB 硬碟。

Vega G2.2 則使用了全新的 Fusion DAC 解碼模組、Direct Data Recording 及第二代Galvanic Isolation 電氣隔離技術， 時鐘部分由 G2.1 的 72fs 雙飛時鐘升級至 60fs，大幅降低時 基誤差，提升音樂細節及寧靜度。

Technology Story
AURALiC have recently unveiled their latest products, the G2.2, at the HighEnd Munich exhibition. These new models are built upon a new streaming platform that represents a major technological advancement since the introduction of the first-generation ARIES in 2014. This article aims to provide an overview of the new technologies featured in these products.



Tesla G3 - A New Era for Wireless Streaming
Built on a 64-bit ARM architecture, this revolutionary streaming platform delivers eight times the processing capability of its predecessor. Equipped with 4GB of DDR4 system memory, the Tesla G3 can easily handle even the most demanding processing tasks, making it a future-proof solution which will accommodate the rapidly evolving digital audio landscape.

The Tesla G3 platform also employs Direct Memory Access (DMA) technology for its audio input and output channels, enabling all audio-related hardware and software to access the system memory directly. This significantly reduces latency and jitter by 90% compared to Tesla G2, giving us more flexibility to fine-tune the performance and sound quality of our products.

With these advancements, the Tesla G3 optimizes operations and enhances multitasking capabilities in all the new G2.2 series products, providing our customers with an unparalleled streaming experience.



ARIES G2.2 - Wireless Streaming Transporter
The ARIES G2.2 have undergone a complete interior redesign, with 90% of the electronic components being brand new. These cutting-edge products boast several new technologies that have been introduced to take their performance to the next level, all enclosed in AURALiC's elegant UnityChassis II enclosure.

New Galvanic USB Isolation
The introduction of the galvanic isolation technology on the USB port in the ARIES G2 was a significant breakthrough for digital audio systems. It successfully addressed the issue of separating the noisy computing circuit from the sensitive audio circuit, resulting in a massive improvement in USB audio system sound quality

Building on this success, AURALiC is proud to introduce the second-generation Galvanic USB in the ARIES G2.2. This new isolator has improved DAC compatibility, functioning in the same way as a regular USB port with hot plug/unplug support. The signal quality and jitter performance of the 2nd generation Galvanic USB has been further optimized, resulting in noticeable sound quality improvement.

In addition, users can now choose to enable or disable the USB port power supply to the DAC through software, which ensures an even cleaner signal path.

New Purer-Power Design
The ARIES G2.2 features the Purer-Power low noise power supply with a capacity that is twice that of the previous version, and an even lower noise design. This increased capacity ensures a clean and stable power supply for the high-performance processing platform and music storage options.

All digital audio-related circuits, including the Galvanic USB, have their individual power supplies, maintaining an extremely low noise level of just 0.8 microvolts - an 80% reduction from G2.1 model. Furthermore, the computing circuits, which are less sensitive to noise, benefit from a low noise power supply of just 27 microvolts, a 50-fold improvement from G2.1. This advanced power supply design ensures that the digital audio circuits receive a clean and stable power supply, free from noise and interference, resulting in a superior audio experience for the listener.

NVMe Internal Storage
With the new Tesla G3 processing platform in place, ARIES G2.2 have upgraded their internal storage from traditional SATA based SSD or HDD to the most advanced NVMe (Non-Volatile Memory Express) SSD storage option. This upgrade offers numerous benefits, including outstanding data transfer speeds and dependability, ensuring a seamless experience for storing and playing digital music.

Thanks to the Direct Memory Access (DMA) technology, NVMe storage offers significantly faster transfer speeds and lower latency than traditional storage options, resulting in improved performance and faster access to stored music. Compared to the G2.1 model, the ARIES G2.2 now offers a copying speed that is ten times faster when transferring music from Ethernet to the internal storage.

ARIES G2.2 can be fitted with factory pre-installed 4TB NVMe storage as an option. However, customers can also request larger storage options as a special-order request.

USB 3.0 External Storage
The addition of USB 3.0 external storage port on the ARIES G2.2 significantly increases copying speeds and facilitates effortless transfer of high-resolution audio files. The USB 3.0 port provides 1.5 amps of power, triple the power capacity of G2.1. The added power capacity also allows for a wider range of external storage options, including larger capacity drives that may require more power.

Support of LEO GX.1
For the most discerning listeners, ARIES G2.2 now offer the ability to connect to our LEO GX.1 Reference Master Clock through Lightning Link, allowing for even greater levels of accuracy and improved sound quality of digital outputs.
The VEGA G2.2 streaming DAC represents the latest evolution in high-end DAC performance and cutting-edge analog circuit. AURALiC is at the forefront of digital audio technology, continuously pushing the boundaries with innovative new technologies.

VEGA G2.2 - Streaming DAC
The VEGA G2.2 streaming DAC represents the latest evolution in high-end DAC performance and cutting-edge analog circuit. AURALiC is at the forefront of digital audio technology, continuously pushing the boundaries with innovative new technologies.

Fusion DAC
When it comes to audio digital-to-analog converters (DACs), there are two primary designs: discrete ladder DAC and Delta-Sigma DAC. The popular discrete ladder DAC design allows designers to use different components for various parts of the circuit, providing greater flexibility in tailoring the sound signature. However, the discrete ladder DACs can suffer from non-linearities caused by precision mismatches in the resistor values. Uneven temperature changes also play a significant role in introducing non-linearity to the system. This can lead to distortion and reduced overall performance.

Delta-Sigma DACs are known for their high accuracy and resolution, which is achieved through precise manufacturing processes. These DACs also offer a high dynamic range and low noise and distortion level, making them well-suited for high quality music playback applications. However, Delta-Sigma DACs are often integrated with complicated digital circuits like Phase Lock Loop (PLL), digital filter, and oversampling circuits, which can make them less customizable for designers. This can limit their suitability for high-end applications where customization and flexibility are important.

AURALiC's Fusion DAC design in the VEGA G2.2 is a pioneering technology that combines the best features of discrete ladder and Delta-Sigma DAC designs. This innovative approach uses a high performance, manufacturer DAC chip as a basis for modification. Most of the DAC chips’ functions, such as PLL, digital filter, and oversampling circuits are bypassed, and instead AURALiC's proprietary clock reconstruction, digital filter, and oversampling technologies are deployed. This unique approach ensures that only the precise switching network inside a DAC chip is used for the final digital-to-analog conversion stage, resulting in exceptional sound quality. This Fusion DAC design facilitates a unique level of customization and flexibility, providing users with the ability to fine-tune and optimize the DAC to their individual preferences. Overall, AURALiC’s proprietary implementation of this unique, in- house developed technology represents a significant advancement in DAC design, offering exceptional performance and unparalleled sound quality.

Direct Data Recording
Analog volume control is widely regarded as the superior approach for achieving high-performance audio playback. Whilst digital volume control can accurately reduce the signal level, it cannot reduce the noise floor level of the output signal. As a result, when using digital volume control to attenuate the signal by a large amount, the system's dynamic range is inevitably heavily compromised. Analog volume control, however, can reduce both the signal level and noise floor, whilst retaining the system's dynamic range.

The VEGA G2.2 features a true analog ladder resistor volume control that delivers exceptional and noise-free control without introducing any distortion. This volume control system includes eight coil-latch relays that remain inactive when not in operation, consuming no power and emitting no EMI noise. Once the system is adjusted, it remains electronically invisible, thereby further enhancing the already outstanding audio performance of the VEGA G2.2.

Passive Analog Volume Control
Analog volume control is widely regarded as the superior approach for achieving high-performance audio playback. Whilst digital volume control can accurately reduce the signal level, it cannot reduce the noise floor level of the output signal. As a result, when using digital volume control to attenuate the signal by a large amount, the system's dynamic range is inevitably heavily compromised. Analog volume control, however, can reduce both the signal level and noise floor, whilst retaining the system's dynamic range.

The VEGA G2.2 and G3 feature a true analog ladder resistor volume control that delivers exceptional and noise-free control without introducing any distortion. This volume control system includes eight coil-latch relays that remain inactive when not in operation, consuming no power and emitting no EMI noise. Once the system is adjusted, it remains electronically invisible, thereby further enhancing the already outstanding audio performance of the VEGA G2.2 and G3.

Analog Preamplifier
The VEGA G2.2 maintains the successful analog preamplifier function from the original VEGA G2.1. This feature has been enhanced in the new design, with the output level increased from 4.4Vrms to 6Vrms to meet the demands of even the most power-hungry amplifiers. Additionally, the ORFEO Class-A output modules ensure that the balanced output can drive loads well below 600ohm with minimal degradation in performance. If desired, users can disable the preamplifier function through software, with the option to reduce the output level to 2Vrms, allowing for the use of external preamplifiers. In addition, a convenient home theater bypass mode is available for analog input channels.

Galvanic Isolation
Modern high-end DACs are capable of providing exceptional dynamic range that can reveal minute details in the original recording. However, achieving such a dynamic range requires extremely clean clocks, power supplies, and signal feeding into the DAC. To ensure that no noise can be coupled into the DAC circuit, the VEGA G3 is equipped with high-speed galvanic isolators that are strategically positioned between the Tesla G3 processing platform and the ultra-sensitive audio circuit. These isolators provide physical separation and protection against interference for the DAC whilst enabling data transfer.