Some gears' manuals indicate their internal signal flow. Is this just marketing effect, or do I have to conclude that other gears will get a hard time in having bit-perfect recording ? Some gears have special features to ensure bit-perfect recording: Creative has bit-accuracy mode but works only up to 96khz, and Weiss DAC202 has transparency check but is over budget for me. Here are some experiences I have gathered around: Here are some of the interfaces I have considered so far:Īnd tons of others (I can post my entire research if some are interested: 67 audio interfaces). So I have a few questions regarding this issue:ġ- What parts of the signal flow (from the PCM stream to the file) might alter the audio data ? Drivers (ASIO, WDM.) ? USB/Firewire/PCI/PCIe protocols ? Audio interface internals ? Recording software ? OS ? What have you experienced and pointed out as problems ?Ģ- What would you advise me to consider buying ?
I would have thought that any interface would be ok as long as no A/D or D/A conversion altered the flow, but after googling and searching around GS, it seems that people can't get an exact bit-perfect recording of their source (failing null tests with just digital loop-backs). I have found many audio interfaces that would fit the specs, but can't find any guarantee about the bit-perfect feature. I don't care about latency (as long as I don't have dropouts). I want to record this stream in my PC with bit-perfect accuracy (getting a WAV, FLAC, RAW file). I have a digital stereo PCM stream out of AES/EBU (or S/PDIF) from my converter (24bits/192khz single-wire).
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