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operation with MAC OS. USB Class 2 operation with
Windows up to 384kHz with
free driver download
from
Grace Design. When nothing is connected to the USB
connector #2, the m900 is bus powered through this
interface and operates in Low Power mode.
2.2 FRONT PANEL
1
2
1 - Headphone Outputs
Parallel headphone outputs wired to high quality TRS
jacks. When headphones are connected to the right
hand jack, the line output signal is muted.
2 - 7 Segment LED
Displays level setting from 0 - 99. This display is also
used for navigating the m900 setup menu. The volume
control step size is 0.5dB. The right hand decimal point
comes on to indicate the 0.5dB value. For instance, “65.“
indicates a volume setting of 65.5dB.
2.3 TOP PANEL
1
1 - Volume Control
The top mounted rotary encoder provides precise,
stepped level control. Its push-button feature is used to
mute all signals (single push and release) or access the
setup menu (push and hold).
3 Operation
Unpacking Your m900
The m900 arrives in simple but protective Korrvu™
packaging. We recommend that you save this box in the
event you wish to store or ship your unit in the future.
The box will contain the m900, printed owner’s manual,
a 2A USB wall power supply and 2 USB type B mini ca-
bles – one 6’ and one 10’. If you are missing any of these
items, please contact us at 1.303.823.8100.
Setting Up Your m900
The m900 is designed to sit on your desktop or atop
your audio center. Its small, low profile stature easily
fits on any desk or media center furniture. Put your unit
wherever you like, as long as it’s within reach. The top
mounted volume control will sit comfortably under your
hand whenever you need to control your system volume,
quickly mute or change settings.
Headphone jacks are on the front and inputs and line
outs are on the back, so your cabling can remain clean
and simple.
Powering Up Your m900
There is no power switch. Power is automatically ap-
plied when either of the USB jacks are connected. If you
wish to power off the m900, simply disconnect the USB
connection.
The m900 can be powered from the your computer’s
USB Bus in Low Power mode via the #1 USB connector. In
this mode the internal supplies operate at lower voltage
to conserve power. This is useful if you are traveling and
do not have access to AC wall outlet.
If you connect the included 2A USB power supply
to the #2 USB connector, the m900 switches into High
Power mode. The #1 USB 2 port will maintain an active
connection to your computer, but no power will be
drawn from the computer port. If running in High Power
mode and the power supply is disconnected, the m900
will reboot.
