Accuphase DP-77 User Manual

32
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

Accuphase DP-77 Specifications

Optical Specifications

SACD wavelength	650 nm
CD wavelength	780 nm
Optical output wavelength	660 nm

Digital Processor Specifications

Sampling frequencies	32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz
High sampling frequencies	176.4kHz, 192kHz
Dynamic range	114 dB

Power

AC voltage	120V/230V 50/60Hz
Power consumption	24 W
Net weight	17.7 kg

Weight and Dimensions

Width	475 mm
Height	151 mm
Depth	397 mm