The I2S module can be installed instead of the USB module. A new technology is used to make the I2S data format more reliable. Actually this format was made for internal use and not able to drive long data lines. Sonnet is using a kind of data transport based on the typical impedance of a standard UTP cable. By using this technology it is important that both transmitter and receiver is made for this quite heavy load of 100 Ohms. As a result lengts of 30 meters between source and receiver can be used without loss and jitter.
The I2S module is dedicated for Sonnet products like for instance our Hermes streamer. However in some cases by removing four jumpers on top of the module it will act as a high impedance receiver and therefore more flexible to match with other products. Still Sonnet Digital Audio cannot guarantee the correct behaviour in conjunction with other systems. If you have any doubts about the correct match with our products don't hesitate to contact us.
You may thinkthat Sonnet Digital Audio is a new name in the world of the true Hi-Fidelity and the digital technology, but it is only partially so. For sure, Sonnet it is a new brand, but it includes all the previously built-up know-how in Metrum Acoustics, with the most recent technological/product optimizations developed since mid-2018, when Cees Ruijtemberg left Metrum Acoustics to start Sonnet Digital Audio.
Who is Cees Ruijtemberg (Ed.)
Cees Ruijtenberg is the Dutch digital genius. After founded and developed Metrum Acoustics and after having produced some of the best DAC available today at extremely competitive prices, gifted with the most complete, balanced and deeply natural sound, today Cees presents with the top DAC Sonnet Morpheus the design of a further refined Metrum Pavane Level 3. You can hear the difference.
And not only: other device is being designed and built, and within the others, today available, the exceptional "Hermes" digital streamer.
Metrum Acoustic at a glance
All Engineering (AE) is a company with a history of innovation in many fields within the world of electronic design. In the audio industry AE is primarily known today for its brand Metrum Acoustics. In the electrostatic speaker field their experience dates back to 1989 and gradually over time broader electronic applications have evolved.
A diverse range of acoustic system products have been created during this period, always relying on sound electronic design principles. Digital signal processing has played a significant role in more recent developments.
In hi fidelity audio AE’s attention was initially drawn to the limited availability of certain componentry. Established manufacturers supplying these key components decide how signals should be processed. No alternatives are available and therefore this greatly influences the sound image that is realised.
Current trends among manufacturers are to use the technique of ‘oversampling’ or ‘upsampling’ within the digital to analogue chipset itself. This forces designers to utilise this method of signal conversion for their own products. It also means that many brand systems use the same building blocks and consequently sound the same. The sound images created by such systems can actually betray the componentry that has been implemented.
These sampling techniques were introduced to fulfil the need ‘to smooth’ the conversion process from digital to analogue and prevent phase distortion. Particularly during the years following the introduction of CD replay, conversion methods proved insufficient with regard to sonic artefacts. In response strong filtering methods were employed and the oversampling technique was born. These techniques however had disadvantages which manifest themselves for example in areas of transient response.
Today there is a growing view that ‘non oversampling’ or NOS for short, offers many benefits but without the compromises mentioned above. AE dedicated considerable time and attention to researching the NOS premise and found its audible benefits valid up to a certain point.
The question then remained how to remove these sonic artefacts without resorting to oversampling. This question was answered by the first product made by AE the NOS mini DAC Quad, a digital to analogue converter designed and manufactured with modern high speed industrial grade chipsets, free from most of the disadvantages of the past. These techniques are improved over time and used over the entire range of products. The most important result is the sound, which was never so close to the analog origin.