dyno:
Ясно, спасибо.
ЗЫ Аманеро как бы тож не кетай.
Так и XMOS не Китай. Просто XMOS умудрился в открытый доступ отдать на коленке сляпанные схему ЦАПа и дровишки для своего чипа - и понеслось - 100500 версий XMOS+ESS ЦАПов на Али задешево... а то, что они тупо не играют, это ж всем пофигу.
Добавлено спустя 6 минут 33 секунды
dyno:
Я слепой не проводил, но разница весьма приличная. Может ещё от ЦАПа зависит, пробовал на АК4490+Аманеро.
Разница может быть в том, что у RME внутри стоит очень качественный SRC конвертер, о чем они сами с гордостью пишут...
8.6 SRC (Sample Rate Conversion)
The ADI-2 Pro includes an asynchronous stereo sample rate converter (SRC). A SRC allows a
conversion of the sample rate in real-time. The converter used in the ADI-2 Pro operates practically without loss of signal quality, so no audible artefacts or noise is added. In fact, the SRC
works so well that we could recommend to just leave it on at all times, thus eliminating all clock
problems right from the start. Which is the case for the SPDIF input in Auto mode.
The SRC offers a maximum conversion rate of 1:7 or 7:1, respectively. Thus, 192 kHz can be
converted to any sample rate down to 44.1 kHz, and 32 kHz can be converted to any frequency
up to 192 kHz. Higher sample rates than 192 kHz are not supported.
An SRC not only converts sample rates, it also serves as a clock decoupler. With SRC active,
even non-synchronizable devices (CD-players, DAT machines, etc.) can be used in a setup of
digital devices, just as if they were externally synchronized. The SRC decouples input and output clock and sets the output clock to the common reference, thus allowing the combination of
different clock-sources. For example having the ADI-2 Pro synchronized to an AES signal, a CD
player connected to SPDIF input can only be used when the SRC is set to SPDIF. It then decouples the clock of the non-synchronizable CD player, preventing clock problems and drop
outs. As the incoming clock phase is no longer fixed when the SRC is activated, the SPDIF
Sync state in the State Overview screen will always show lock.
When using the internal clock, every SRC also works as a jitter killer. However, the ADI-2 Pro is
equipped with SteadyClock FS, thus operating as perfect jitter killer with any clock source.
However again, a jittery input signal might degrade the quality of the sample rate conversion.
The ADI-2 Pro therefore has a second SteadyClock exclusively for the current SRC input signal
to make the sample rate conversion process as reliable and transparent as possible.
A SRC can also be used to upsample audio. A 44.1 kHz source can be converted to 192 kHz in
real-time and thus played back with the DAC set to 192 kHz. The usefulness of this process is
questionable. There is zero content added, so the exact same audio is played back. The only
change is that the DAC's oversampling filters are moved far out of the audible range. But even
at 44.1 kHz the ADI-2 Pro’s filters are inaudibly high, and the process of sample rate conversion
also uses those lower filters in its first conversion step.