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Important Safety Information
GENERAL
• Indoor use only
• Ordinary Protection: This equipment should not
be exposed to dripping or splashing.
• Avoid placing objects filled with liquids, such as
vases or glasses, on this equipment.
• Class I Equipment (grounded type)
• Electrical rating: 100-120/220-240V~ 50-60Hz
25W
• Mains supply voltage fluctuations are not to
exceed ±10% of the nominal supply voltage.
• Pollution Degree 2
• Installation (Over voltage) Category II for tran-
sient overvoltages.
• Maximum Relative Humidity: <80%
• Operation temperature range: 10 °C to 40 °C
• Storage and transportation temperature range
–40 °C to 70 °C
• Maximum altitude: 3000m (9843 ft)
• Equipment suitable for continuous operation
• Weight: 2.3kg (5lbs)
Safety Marking Symbols
CAUTION: READ ACCOMPANYING
DOCUMENTS
This symbol, located on the equip-
ment and in this manual, refers to
important instructions. Read this
manual thoroughly before operating
this equipment.
WARNING: ELECTRICAL SHOCK HAZARD
This symbol, located on the equipment
and in this manual, indicates the poten-
tial for electrical shock hazard.
SERVICE INFORMATION
The Grace Design m920 contains no user service-
able components. Contact Grace Design for repair
and upgrade information. In the event that your
Grace Design m920 needs to be returned to the fac-
tory, contact us for a return authorization number.
m920 Key Features
• Stereo analog inputs - balanced (+4dBu) XLR and
unbalanced (-10dBv) RCA.
• Ultra low distortion 32-bit /384khz Sabre DAC
accepts stereo digital input sources in AES3,
S/PDIF, TOSLINK (optical) and USB formats with
auto sample rate detection and digital de-em-
phasis filter
• User configurable DAC filter response for PCM
and DSD playback
• USB for playback of up to 384kHz / 32 bit PCM as
well as DSD64 and DSD128 playback via DoP
• AES and S/PDIF playback of up to 192kHZ / 24bit
PCM as well as DSD64 playback via DoP
• New dual-stage wide lock range PLL for im-
proved jitter rejection on non s-locked sources
• Third generation s-Lock™ dual stage PLL (phase
lock loop) circuitry for the ultimate in low jitter
clocking and sonic integrity
• Two sets of line level outputs provided via RCA
(unbalanced) and ¼ TRS jacks (balanced) for con-
nection to stereo monitors
• RCA line outputs can be configured for variable
or fixed DAC output mode for operation as a
