INSTRUCTION MANUAL
Using the DAC-50
Digital Input Board
DAC-50
Limitation in Sampling Frequency Display on the C-2120, E-600, E-470,
E-370, and E-270
These units will not display the correct sampling frequency, but will instead display 192.0
kHz, when playing at sampling frequencies of 352.8 or 384 kHz (PCM) or 2.8224, 5.6448,
or 11.2896 MHz (DSD). The DAC-50 itself, however, will be using the correct sampling
frequency to process and replay the incoming signal.
About the Cable Connection
Do not simultaneously connect to both digital (USB, coaxial) and analog (line, balanced)
outputs of the same source device. Running multiple connections to a single device may
create a loop, resulting in humming and other noise.
Limitation with the E-307, E-308, C-245, and CX-260
Owing to power limitations, these devices cannot support dual digital input boards. They
do, however, support simultaneously use of one digital and one analog input board. If you
install a DAC-50 into one slot, you can also install an AD-50, -30, or -20 into the other.
Adds one USB input, one optical-fiber input, and one coaxial input to the device. Use these to input
digital sound signals from digital components.
USB
Format:
USB 2.0 high-speed (480 Mbps) compliant
Sampling Frequencies: 32 to 384 kHz (all 16–32-bit 2-ch PCM)
2.8224 MHz, 5.6448 MHz, 11.2896 MHz (1-bit 2-ch DSD)
(11.2896 MHz is ASIO only)
Cable:
USB 2.0 Connector with Type-B Plug (length up to 2 meters)
USB connection requires bus power (minimum 200 mA).
Optical
Format:
JEITA CP-1212 compliant
Sampling Frequencies: 32 to 96 kHz (all 16–24-bit 2-ch PCM)
Cable:
JEITA-compliant optical fiber
Coaxial
Format:
IEC 60958 AES-3 compliant
Sampling Frequencies: 32 to 192 kHz (all 16–24-bit 2-ch PCM)
Cable:
75-ohm digital coaxial
Thank you for your purchase of the DAC-50 Digital Input Board. This optional board allows you to
play audio data from your computer through a USB connection. It can also play from a CD player
or other digital output device connected by digital coaxial cable or optical fiber.
These boards mount into the rear panel of your supporting analog Accuphase device, and allow the
device to accept digital input. Refer to the documentation for your Accuphase device for information
about how to operate this board—how to select inputs, set the sampling frequencies, and so on.
Included Accessories: “USB Utilities 2” CD and “USB Utilities 2” Setup Guide
❶
The DAC-50 will automatically lock in the input signal from the
①
coaxial,
②
optical, or
③
USB connector, in
that order, when power comes on or when the input selector is set to OPTION.
❷
To select the input jack to use on the DAC-50 (USB, optical, or coaxial): disconnect the input cables you do
not wish to play from, or else switch off the power to the input devices you do not wish to play from.
Selecting Your Input
If your device includes a DAC switch...
Use the DAC input switch to select the input.
Otherwise...
USB Port
USB (Type B) connection
Connect to the type-B plug on a USB cable. Before connecting to your computer, install the
software from the included USB Utilities 2 CD, as explained in the included documentation.
OPTICAL
Accepts JEITA-compliant optical fiber cable.
COAXIAL
Accepts 75-ohm digital coaxial cable.
Align the plug with the
port and push firmly in.
USB cable
with Type-B plug
USB port
Remove the USB dust cover.*
USB (Type B) connection
*Retain the dust cover for future use.
Align the plug with the
port and push firmly in.
Plug
Plug
Optical fiber
cable
Push to open shutter.
Align plug guide with
jack, and push in firmly.
Remove the plug’s
protection cap.*
Connecting
optical fiber cable
If connector
is shuttered:
*Retain the protection cap for future use.
Note
How to install
820-3316-00 (B1) Printed in Japan
J171.3X
Illustration shows installation on the E-650.
❶
Turn off the device power.
❷
On the rear panel, remove the sub panel of the slot you
wish to use. (See
Fig. 1.
)
◆
Retain the sub panel for future use.
❸
Insert the option board into the slot, along the slot’s
upper and lower guide rails (see
Fig. 2.
). When the rear
of the board reaches the internal connectors, give a
gentle push to snap the connection into place, so that
the front of the board becomes flush with the panel.
❹
Secure the board by screwing in the top and bottom
screws.
●
Turn off the device power before installing or removing option boards. Installing a
board while power is on may damage the equipment.
●
Keep fingers out of the opened slot. Do not place anything other than the board into
the slot.
●
Avoid touching the board’s soldered areas, connector contacts, and components.
Touching these areas may damage the circuitry or the contact. Hold the board by the
edges or along its panel.
●
Tightly screw in the two screws all the way (by hand). If screws are loose, terminals
may separate from ground, resulting in poor contact or equipment damage.
●
Do not use electrical contact enhancers or conductivity agents on input jacks and
connectors, as these may cause aging in resin parts and lead to damage.
Caution
ACCUPHASE LABORATORY, INC.
YOKOHAMA, JAPAN
Guide rail
Guide rail
Fig. 1.
Fig. 2.
Subpanel
Option
board
