Specifications

All digital signals will be output via the co-ax or optical connectors, to allow another device
to receive the same signal.
USB input, allows the DAC to behave like a sound card. Your computer will recognise the
USB DAC and should have no problem linking to it automatically. Once the link is estab-
lished audio data can be transferred and converted at the highest quality. The remote
control will allow limited control of the incoming signal, such as play, pause, stop etc.
However, if a media player such as iTunes is used, it is much more convenient to control
files using the (remote) App to view and control your library via a tablet computer, smart
phone or other remote device. The USB input is totally galvanically isolated to prevent any
computer generated electrical noise from interfering with its performance.
DIGITAL FILTERS
Toggling the FILTER button on the remote handset selects five available digital filter
options. These are used by the DAC to reconstruct the analogue waveform from the digital
signal provided by the source. The five filters offer differing compromises between
performance and suppression of ultrasonic noise. The best option will be system
dependant so try experimenting to see which option you prefer. The differences are very
subtle so it may take some time to find your favourite! None of the filters significantly affect
the frequency response in the critical 20Hz – 20kHz audible range so don’t be worried
about having the “wrong” selection; there is no right or wrong option.
Note that the five filter options differ according to the input sampling rate range, there
are two ranges. Lower rate inputs (32kHz – 48kHz) have different filter shapes because
they must filter at a faster rate (steeper filter) to allow good performance. Higher rate
inputs (88.2kHz – 192kHz) offer more gentle filtering for higher audio performance. Your
selected preferences are saved separately for these two sample rate ranges to allow
you to optimise your choice in both circumstances.