Instruction Manual for DAC3 HGC and DAC3 L with 2.X Firmware Page 18
from the stereo playback chain. If the stereo
system includes a turntable and an outboard
phono preamplifier, the outputs of the phono
preamplifier can be connected directly to the
second set of analog inputs on the DAC3 (HT
mode off, analog input A2).
When playing movies and other surround
sources, analog signals from the AVR would
pass through the DAC3 at unity gain (HT
mode on, analog input A1).
For stereo applications, digital sources would
feed the DAC3 and the volume control on the
DAC3 would control the playback level (HT
mode off, digital inputs).
HT Mode – Calibrated Output
Any digital input can be set to the factory-
calibrated fixed-gain by turning the HT mode
on. In HT mode, the analog audio outputs are
set to factory calibrated levels. This mode is
useful in studio applications where calibrated
interface levels are used between various
pieces of equipment. (Note: This function is
similar to the calibrated mode on the DAC1.)
Preamp COMPATIBILITY Mode
This feature was added in Version 2.0. If you
have an older version, an update is available.
The COMPATIBILITY mode disables the
volume control when the DAC3 feeds a
preamplifier that will be used to control the
system playback volume. When this mode is
used with a Benchmark preamplifier or line
amplifier, such as the HPA4, a single
Benchmark IR remote can be used to control
both devices.
In COMPATIBILITY mode:
• HT mode is on for all inputs
• MUTE is disabled
• DIM is disabled
• Remote INPUT select arrows are
disabled
• The VOLUME knob will be driven to
the unity-gain HT position.
• As a safety feature, manual rotation of
the VOLUME knob will provide a
momentary override of the HT volume
setting. The knob will be driven to the
unity-gain HT position when released.
Enabling the COMPATIBILITY mode:
• Simultaneously hold the DIM/MUTE
and INPUT-UP keys for 3 seconds to
activate or deactivate this feature.
• The HT light will be illuminated on all
inputs when COMPATIBILITY mode
is enabled.
• The DIM/MUTE key will be disabled
when COMPATIBILITY mode is
enabled.
• The DAC3 will not respond to the
DIM, MUTE, VOLUME-UP and
VOLUME-DOWN keys on the IR
remote when COMPATIBILITY mode
is enabled.
USB MODE Selection
The DAC3 supports two USB MODES:
• USB Audio 1.1 mode - up to 24 bits
at 96 kHz
• USB Audio 2.0 mode - up to 24 bits
at 192 kHz plus DSD in DoP 1.1
format
Caution: Close all USB audio playback
applications before changing the USB MODE.
If an audio application is playing while the
USB MODE is changed, the audio application
may freeze.
Note: The computer and DAC3 must be
connected and both must be on before the
USB MODE can be changed.
To change the USB MODE, select the USB
(U) input on DAC3 and then press and hold
the USB button on the remote control for 3
seconds. If a remote control is not available,
simultaneously press and hold both INPUT
buttons on the front panel for 3 seconds.
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