New product launch?

[thumb5]

By the way, could someone explain me why Air should sound better than USB? Cause with (asynchronous) USB, the DEV get the data, and manage  with it's DAC, and that's all? Finally, doesn't matter how the data get into the devialet ?

Ps : hope it's not a kind of Godwin's law...

By using AIR the data from the network is buffered inside the Devialet and then processed by the internal DAC. No jitter can occur, since this process is completely independent of any external clocking. As long as the buffer does not run empty you can be sure that the data is processed bit-perfect. If the buffer underruns you hear dropouts.

With other digital sources like USB, AES/EBU, BNC the sender delivers the data with its own clock. Even small inaccuracies between the clock of the sender and the internal clock of the Devialet can induce, that the Devialet can not process all bits sent by the source. This is no longer bit-perfect (jitter) and the reason, why in professional studio equipment master clocks are used, which synchronize all devices in the digital chain. Unfortunately, the Devialet does not have an input for an external clock.
USB signals from a computer tend to have a bad clock precision. Precision can be improved e.g. by reclockers like the Mutec MC-3+.
Or you can use high quality streamers like the ones from Aurender, which already have a very precise output. But even if you have a source with a very precise clock, still the clock accuracy of the Devialet matters (unless you synchronize Devialet and sources with a master clock, which is not possible).

Since AIR bypasses these problems, it delivers the best sound quality you can achieve.

That's correct, except for asynchronous USB where the audio samples are clocked through the DAC using its internal clock which is asynchronous to (in a different clock domain from) the clock on the USB host.  There are other mechanisms to ensure that this does not cause long-term drift and loss of samples but these do not affect the internal DAC clock - they're based on telling the source whether to send more or fewer samples.  AIR has a similar kind of feedback mechanism that causes the host to keep in track with the rate at which the Devialet is consuming samples.  Purely from a clocking point of view asynchronous USB should be the same as AIR, leaving aside possible effects on sound quality associated with the USB interface itself.