AURALiC SIRIUS G2 Universal Upsampling Processor

USB interfaces, clocks, and soundcards

The above highlights aspects of the full AURALiC stack that don’t quite unwrap at first thought but unwrap a whole lot faster with the SIRIUS G2 in situ. When you hear this system, you almost automatically place it in the same standing as the likes of Esoteric, CH Precision and their ilk. At first, you do this simply because there are four boxes staring back at you, rather than just one. Then you hear what it does and the full stack meets the same criteria, even though the cost of all four AURALiC boxes is considerably less than its peer group. OK, very close investigation shows where the top systems are better, if only fractionally better. But upsetting the apple-cart is not the point; this four-box system goes toe-to-toe with some of the gods of modern digital audio and not only doesn’t come away bruised, but gives them a bit of a bruising too.

All of which means the SIRIUS G2 gets a real seal of approval. Whether used to start, finish, or flesh out an AURALiC stack or simply to buff another brand’s DAC, it works and works surprisingly well. If you are sceptical (rather than a cynic) and take a listen, what it does to a digital signal is surprising in a good way. What’s more, I’ve tried hard to hear where there is a downside to this kind of upsampling and for the most part I’m still trying. While the SIRIUS G2 shows listeners why AURALiC is so good by virtue of doing an exceptionally good job, it doesn’t force you into an AURALiC-shaped future. That being said, if you have a very good DAC and hear what the SIRIUS G2 does for it, don’t be surprised if you start asking questions about those other boxes in the line-up.  


Type: Streaming Upsampler

Input channel: Lightning Link (Up to 384K/32bit, DSD512), USB Audio (Up to 384K/32bit, DSD512), AES/EBU (Up to 192K/24bit, DoP DSD64), Coaxial (Up to 192K/24Bit, DoP DSD64), TOSLINK (Up to 192K/24Bit, DoP DSD64)

Output channel: Lightning Link (Up to 384K/32bit, DSD512), 2x USB Host (Up to 384K/32bit, DSD512), AES/EBU (Up to 192K/24Bit, DoP DSD64), Coaxial (Up to 192K/24Bit, DoP DSD64), TOSLINK (Up to 192K/24Bit, DoP DSD64)

Sampling rate: PCM in 44.1K - 384K (16 to 32Bit), DSD64 - DSD 512 (Both 44x and 48x)

THD+N: <-150dB (Upsampling to any PCM or DSD64)

THD+N: <-155dB (Upsampling to DSD128-DSD512)

THD+N: <-130dB (Downsampling to 44.1K/48K) Digital 

Dimensions W×H×D: 340 × 80 × 320mm

Weight: 7kg

PRICE:  £5,499

Manufacturer: AURALiC LIMITED

Distributor: AURALiC Europe

Tel: +44(0) 7590 106105


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