Owner's Manual

Using
digital inputs
The 851C is fitted with four
digital
inputs for the connection of
external
digital
sources. When a
digital
input
is
selected, digital audio from
external
devices
will
be
up-sampled
and
delivered
to the 851C analogue
outputs. The
digital
outputs
always
output the incoming data without
any processing.
The
digital
input and interface formats are
listed
in the
table below:
Digital Input
1
Co-axial
or
Toslink S/PDIF
2
Co-axial
or
Toslink
S/
PDIF
AES/EBU
XLR
balanced
AES/EBU (consumer)
USB
B-type Socket
USB
Audio
profile
1.0
(default)
or
2.0
The 851C
digital
inputs, and the 851C
CD
player,
are
selected
sequentially
by
pressing the front
panel
or the handset Select button.
In
the case of
digital
inputs 1,
2 and the
AES
/
EBU
input, once the input is
selected,
if a
compatible data stream is present it
will play
through
the
851C
immediately.
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851C
When a
digital signal
is
playing
through the 851C its
display will
show
the input stream
sample
rate and word
length (also
known as
"bit
depth") along
with
an
indication
that
the stream
is
being
up-sampled
to 24-bitj384kHz.
If
no source, or an
incompatible
data stream,
is
connected to a
digital
input, the
display will
show
UNLOCKED
when
the
input is
selected.
Note: Rather than
display
the exact word
length,
some sources report
data as either
20
bit maximum
(displayed
as<
=
20) or
24
bit maximum
(displayed
as<
=
24).
USB
Audio
The 851C
USB
input
enables
the
playback
of
audio files
or streamed
programme from Microsoft Windows or
Apple
Mac
OS
X
personal
computers (and some Linux
builds).
When connected via
USB
the
personal
computer
will
identify the 851C as an audio device. Specifying
the 851C
in
the computer's audio
control panel will enable
it to
play
audio data either stored
locally
on
the
computer or streamed to the
computer via a network or the internet.
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input
or turn
the
851C
off
before plugging/unplugging
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Always
turn
the
Volume
to
minimum,
switch
to
another
• cables
to
the
USB
input
or whilst booting
up/shutting
down your
PC/
Mac.
Note:
Always
use a high
quality
USB
connection
cable
certified as
USB
Hi·
Speed.
USB
cable
connections longer
than
3m
may
result
in
inconsistent
audio performance.
9
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