DAC & High Power Digital preamplifier & Headphone Amplifier
ZeroUno
DAC-HPA
Operating Instructions
®
ZeroUno
DAC-HPA
page 3
O
N
/O
F
F
The ON/OFF Switch is located at the lower left side on the
downside in the BOTTOM PLATE.
V
O
L
U
M
E
In PLAY mode turning the knob on the right side clockwise or
counter clockwise changes the
VOLUME
(up/down) in steps of
1 dB.
While rotating the volume knob, the volume level is shown at
the display.
Volume range is -70dB ÷ 0dB.
L
E
V
E
L
A
D
JU
S
T
DIRECT
LEVEL ADJUSTMENT
While in PLAY mode, to adjust the level:
Press the INPUT button and
keep it pressed
.
Then rotate the VOLUME knob left or right to adjust the
LEVEL between 0dBu and +24dB.
The level adjustment is shown at the display.
It is convenient an indication of 0dB VOLUME at the
maximum wanted listening level.
IN
P
U
T
B
U
T
T
O
N
Press the
INPUT
button to switch from one input to another in
the following order:
RCA SPDIF
XLR AES/EBU SPDIF
OPTICAL SPDIF
USB (i
2
S or DoP with auto detection)
The de-emphasis filter will be automatically activated if the
signal at the input was recorded with emphasis.
D
IS
P
L
A
Y
NOLOCK
.
USB
OOOOOOO.
Volume
.
:
.
-20dB
..
MUTE
Balance:
.
R0.5
.
PHASE+
INPUT
..
:
.
USB
In PLAY mode the display reports the status
of the
ZeroUno
DAC
:
The first row at the display shows the LOCK on the incoming
signal.
The second row shows the VOLUME (really the attenuation)
in dB.
The third row shows the BALANCE and the ABSOLUTE
PHASE.
The fourth row shows the active INPUT.
Once MUTE is displayed, there is no signal locked at the
selected INPUT and the
ZeroUno
DAC
has switched
to MUTE.
