И еще нашел немного по измерению джиттера для HiFace и некоторых других транспортов и пр.: http://www.head-fi.org/forums/f46/usb-24...ost6063226

"Courtesy of Giorgio a videohifi forumers

We just finished a session of the digital measurement of the following apparatus:

- M2Tech HiFace
- Nagra DII
- Marantz CDR620
- Lynx Two

The instrument used to measure the jitter and the status channel is Neutrik A2D.
The first place as the stability of jitter is the pen USB-> SPDIF, then the Nagra DII, then the Lynx Two PCI card, and finally the CD Recorder Professional.

In terms of the deviation in frequency, we find the Lynx in the first place, followed by pen USB-> SPDIF on par with the Nagra DII and finally, in this case, the Marantz CD recorder.

At this point, any doubt about the quality of the output signal should be dispelled. The problem with some of the coupling is almost certainly due to the DAC output level that should applied concurrently to 0.5V pp and instead is equal to 2.74V pp. The designers are working to put in "template" level output signal while ensuring full compatibility with all DAC Marketing"

Судя по всему, если говорить исключительно о цифрах, то у конвертеров есть потенциал и будущее. Другой вопрос -- какое будущее?