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dCS Vivaldi Upsampler Plus User Manual
Power Button
To switch on, ensure the rear panel switch is set to
panel once. Note that the unit cannot be turned on from the remote control.
To set the unit to sleep mode, press the
(D) beside the button will light, and the digital outputs will mute, but the unit will remain close to
running temperature. Press again to return to normal operation.
To switch off, hold down the
display, then release it.
When the menu is open, press the
When the browser is open, pressing the
panel controls to their normal function.
Menu Button
Menu
Press the
button (E) to open the menu, select menu pages and change settings. See the Menu
39
section on page
for information on using the menu features.
USB2
When the
input is selected and media connected, hold the
open the browser (see page 28). Use the
play.
Filter Button
(F) The optional Filters give different trade-offs between impulse response and aliasing.
For most conversions, only
0.1dB to match the other filters.
The best filter setting is a personal choice and may be related to the type of music.
The table below shows how many filter choices are available for each input / output combination.
32k
44.1k
32k
1
1
44.1k
1
48k
88.2k
96k
176.4k
192k
352.8k
384k
DSD
DSDx2
For conversions with 2 filters (currently all of these have a 44.1k input rate):
Filter 1
is a classic sharp filter.
Filter 2
is a very steep, long asymmetrical (sometimes called apodizing) filter which starts rolling off at
20kHz. This filter has no energy left in the output to exercise the DAC's filter, so there is no pre-ringing
from the source and the DAC. This will improve the response of the DAC's reconstruction filter by
removing some high frequency components that typically cause images in half-band filter DACs.
For conversions with 4 filters:
Filter 1
has the sharpest cut-off, and so has the poorest impulse response (transient performance) but
the best alias rejection (removal of out-of-band frequencies).
Filters
2,
3
4
and
have progressively gentler cut-off, with less alias rejection.
For conversions with 5 filters (currently all of these have a 44.1k input rate):
Filters 1 – 4
are the same as for conversions with 4 filters.
Filter 5
is an asymmetrical design with non-linear phase and no pre-ringing.
Vivaldi Upsampler Manual v2_0x
Power
button once. The main display will turn off, the LED
Power
button for about 3 seconds until
Power
button to close the menu.
Power
button briefly closes the browser and returns the front
Menu
button to change to a sub-directory or select a file to
Filter 1
is available - a classic sharp filter. The amplitude is reduced by
OUTPUT RATE
48k
88.2k
96k
1
1
1
2
5
2
1
1
4
1
1
1
Page 34
I
Power
and press the
SWITCHING OFF
Menu
button down for 2 seconds to
176.4k
192k
352.8k
1
1
1
5
2
6
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Software Issue 2.0x
November 2016
button (C) on the front
appears on the
384k
DSD
DSDx2
1
1
1
2
6
6
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
English version
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