Accuphase DP-77 - 7. Remote Control; Remote Commander RC-28 Operation

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⑨WideRangeAnalogInput/OutputBoardforDG-28/DG-38AIO-DGU1
Allows analog connection of the DG-28 for sources using sampling frequencies
above 48 kHz.
●
Occupies four option board slots of the DG-28.
●
Designed for unbalanced connections.
※ Requires audio cables with RCA type phono plugs, such as the SL-15G from
Accuphase.
⑩WideRangeAnalogInput/OutputBoardforDG-28/DG-38AIO-DGB1
Allows analog connection of the DG-28 for sources using sampling frequencies
above 48 kHz.
●
Occupies four option board slots of the DG-28.
●
Designed for balanced connections.
※Requires balanced audio cables, such as the SLC-15 from Accuphase.
RIGHT
GAIN
LEFT
INPUTS
0
6
dB
-6
ANALOG (BALANCED)
OUTPUTS
LEFT
RIGHT
1 GHT
2 -
3 +
model AIO-DGB1
model AIO-DGU1
GAIN
0
6
dB
-6
RIGHT RIGHT
LEFT LEFT
INPUTS OUTPUTS
ANALOG
The AIO-DGU1/AIO-DGB1 accepts an analog signal from the preamplifier and converts it to digital form using a
high-precision 24-bit delta-sigma A/D converter with a sampling frequency of 48 kHz. It then passes this signal
on for equalization by the DG-28. Analog signal components above 24 kHz are routed directly to the output
using a high-pass filter. The signal equalized by the DG-28 is converted to analog form using a high-precision
24-bit MDS type D/A converter. The resulting signal is mixed to the bypassed components and then sent to the
power amplifier.
BlockdiagramofAIO-DGU1/AIO-DGB1
High-Pass
Filter

DG-28


Option
board
slots
EIAJ
CP-1201
Encoder
EIAJ
CP-1201
Decoder
Analog
IN
Analog
OUT
Level
f
24kHz
Level
f
24kHz
Level
f
Level
f
24kHz
Level
f
24kHz
ΣA/D
Converter
MDSD/A
Converter
From
preamplifier
Topower
amplifier