Simaudio Neo 380D DSD DAC - Manual (Page 8)

380 D Digital to Analog Converter
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8
Front Panel Controls
Figure 1: Nēo 380D Front panel
The front panel will look similar to Figure 1 (above).
The large digital display window indicates the
selected digital input (“D1” thru “D8”) its
corresponding sampling frequency in kHz (“44.1”
thru “192.0”) of the source material currently being
played. The “Standby” button disengages all outputs
from the rest of the Nēo 380D’s circuitry and turns
off the digital display. However, when in “Standby”
mode, all digital and analog audio circuitry remains
powered up to help maintain optimal performance.
When switching back from “Standby” to the “on”
mode, the selected ‘input’ will be memorized from
the previous listening session. The blue indicator
LED turns off when the 380D is in “Standby” mode.
The “Display” button allows you to turn the digital
display on and off. The “Mute” button mutes all
analog output signals. Pressing the “Mute” button a
second time will reinstate all analog output signals.
When the output signal is muted, the
aforementioned contents in the digital display
window will repeatedly flash on and off.
The “Digital Monitor” button provides for a dedicated
loop to be used with either a digital audio
component that can record & playback (DAT, CD-
Recorder, etc.) or a digital signal processor such as
a room correction device. Pressing this button allows
you to (1) monitor the recording as it occurs on the
recording device or (2) engage the effects of the
signal processor. The monitor component’s digital
output must be connected to the 380D’s “Digital
Monitor In” and its digital input must be connected
to the 380D’s “Digital Monitor Out”. The
corresponding LED to the right of the display
window will illuminate when the “Digital Monitor”
function is engaged.
The two (2) buttons labeled “◄ Input ►” allow you to
sequentially scroll, either forward “►” or backward
“◄” through all the digital inputs. The inputs are
ordered as follows going forward (►): “D1”, “D2”,
“D3” , “D4” , “D5” , “D6” , “D7” and “D8”. When you
change inputs, the display window will show the
new digital input and briefly four (4) dashes “----”.
These dashes indicate that the Nēo 380D is in the
process of locking onto a digital signal – this may
take several seconds. Once the 380D successfully
locks onto the digital signal, the four dashes will be
replaced by the sampling rate frequency of this
digital signal. When the selected digital input signal
cannot be locked onto, “----” remains in the display
window. The 380D is capable of processing a PCM
digital signal at one of the following eight (8)
different sampling rates: “44.1”, “48.0”, “88.2”,
“96.0” , “176.4” , “192.0” , “352.8” and “384.0” (all
in kHz) or a DSD digital signal at one of the
following three (3) data rates DSD64 (2.82MHz),
DSD128 (5.64MHz) and DSD256 (11.28MHz); For
DSD input signals, the corresponding information
will appear in the display window as “DSd” , “DSd.2”
and “DSd.4” for these data rates, respectively.
Notes: (i) DSD format signals can ONLY be
played through the USB (“D8”) input. (ii) PCM
format signals with sample-rates of 352.8kHz
and 384kHz can ONLY be played through the
USB (“D8”) input.