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Toggle Position
Native Sample Rate
Resulting Sampling Rate
Flat
All sample rates
Native (No change)
Up (green light on)
44.1
4x Native (176.4)
48
4x Native (192)
88.2
2x Native (176.4)
96
2x Native (192)
176.4
Native (176.4)
192
Native (192)
Down (red light on)
44.1
2x Native (88.2)
48
2x Native (96)
88.2
Native (88.2)
96
Native (96)
176.4
1/2 x Native (88.2)
192
1/2 x Native (96)
As you can see, you have three options. Which option you choose depends upon your personal tastes
as well as the capabilities of your DAC. If your DAC can support up to 192 kHz input, then you should
set your switch to “4x native” (green) or “Native”. (“Native” defeats the upsampling and sends the
native signal to your DAC for processing). If your DAC supports up to 96 kHz, then you may set your
switch to “2x native” (red) or Native. If your DAC does not go above 44.1 kHz or 48 kHz, then you
must
leave your switch in “Native” (center/flat) position.
The Black Box
™
’s upsampling capability is among the best in the industry. The data is preserved and
extended to produce a cleaner, more complete sound. Our system reconstructs the original audio data
as closely as possible and restores what was lost in the mastering process to 44.1kHz (CD sampling
rates). We encourage you to experiment with the upsampling rate while your Black Box™ is breaking
in. At first, you will notice how the upsampling affects the audio in your system. Listen to music you
have ripped at different rates for a few days to determine your preference. Once you have familiarized
yourself with the sonic variations, you can basically “set and forget”.
Additionally, if you play back high-resolution audio at sampling rates above 44.1kHz, be assured that
when set properly, the upsampling of The Black Box™ will automatically disengage to provide you with
native, unaltered high-resolution output.
Simply make sure that the switch is in the correct
position for the sample rate you are playing
. If you are playing back 176.4 kHz or 192 kHz files
and the switch is set to 4x, no upsampling will occur and your output will be native and bit-perfect.
The same is true of 88kHz and 96kHz files when the switch is at 2x.
In the future you will also be able to download new upsampling algorithms (filters) from our website
to your Black Box™. This will allow you to change the sound of your upsampled output from the
default settings. Extensive development has yielded what we believe to be our most natural-sounding
upsampling algorithm to date. Ongoing development will provide additional options so that Black
Box™ users will be able to select the best option for their system. Your Black Box™ is already
equipped with all necessary hardware and software to enable this feature. You will need to know the
serial number of your sound card, which is located on the underside of your Black Box, and on page 4
in this manual.