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Grace Design M906
Monitor System, 5.1 High Fidelity

OUR PART #:  M906

At the core, the m906 is a purist level control for monitoring surround (or stereo) audio sources.
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At the core, the m906 is a purist level control for monitoring surround (or stereo) audio sources. But a closer look reveals a highly intelligent feature set that makes it a vital nerve center for any recording, mastering, or post facility centered around a digital audio workstation. It is configured as a 2U rack mount mainframe controlled by a sleek, powerful desktop remote control, with all audio kept in the mainframe and all control via the remote control.

The m906 offers a full complement of balanced and unbalanced analog 5.1 and digital 5.1 and stereo inputs, the latter featuring the latest generation reference 24bit/192kHz DAC technology with Grace Design's proprietary s-Lock™ PLL for rock solid digital stability. All inputs and outputs on the m906 can be user calibrated for seamless integration into any playback environment with all types of playback equipment.

The m906’s signal path is designed to deliver nothing short of the best performing, transparent audio available. All components are chosen for audiophile performance and long term reliability. Level controls, the heart of a monitor controller, are low distortion precision devices which provide a 100dB range in silent .5dB steps.

Included as a standard feature is Grace Design's reference headphone amplifier circuitry (from the m902), with one output jack on the mainframe and one additional output on the remote. This unique circuitry provides precision headphone amplification for critical monitoring, mixing and mastering.

Features:

  • multiple 5.1 and stereo analog inputs
  • 24bit/192kHz digital 5.1 and stereo inputs- AES3, S/PDIF, ADAT and TOSLINK
  • s-Lock™ phase lock loop sample clock regeneration for ultra-low jitter and rock solid digital stability
  • precision speaker and headphone level controls with a 100dB range in 0.5dB steps
  • every electrical and mechanical design element maximized for absolute purist audiophile performance
  • all controls are built into an elegant, convenient desktop remote control unit
  • all I/O and audio are routed in a 2U rack mount mainframe powered by an external 1U 1/2 rack power supply
  • control up to three speaker systems - two 5.1 or up to three stereo
  • m902 style high-current audiophile headphone amplifier built in with one output on remote control unit and one on the mainframe unit
  • complete system level calibration (inputs, outputs, inter-channel balance, dim) and individual channel solo/mute
  • balanced talkback microphone input and activation switch with additional external foot switch control jack
  • fixed level 5.1 DAC output for direct audio transfers
  • optional downmix module supports all standard Dolby mix ratios
  • optional AES Loop-thru feature provides four AES digital outputs for passing signals to other devices downstream
  • five year transferable warranty on parts and labor

Specifications:

ANALOG INPUT THD+N @ 0dB gain, 1kHz
+20dBu out  <0.001% (0.00075% typical)
+10dBu out  <0.003% (0.001% typical)
0dBu out  <0.009% (0.005% typical)

Intermodulation Distortion SMTPE/DIN 4:1 50Hz, 7kHz
@+20dBu out  <0.002% (0.0015% typical)
@ 0dBu out  <0.008% (0.006% typical)

Frequency Response
+/-3dB  3Hz - 250Khz

Dynamic Range
20-22kHz bandwidth  112dB
20-22kHz bandwidth and A weighting filter  115dB

Output Noise 20-22kHz bandwidth, -20dB gain
High gain mode  -89dBu
Low gain mode  -98dBu
20-22kHz bandwidth and A weighting filter, -20dB gain  
High gain mode  -91dBu
Low gain mode  -99dBu

Phase Deviation
20Hz to 20kHz  < 4
10Hz to 100kHz  < 15

Crosstalk any channel
100Hz  < 100dB
1kHz  < 100dB
20kHz  < 85dB

Balanced Input CMRR
60Hz  > 65dB
1kHz  >65dB
10kHz  >60dB

Gain Range
Low gain mode (0.5dB steps)  -105.5dB to +20dB
High gain mode (0.5dB steps)  -95.5dB to +30dB

Channel Tracking Accuracy
Any channel  +/-0.05dB

Maximum Output Level
Low gain mode (balanced)  +15dBu
High gain mode (balanced)  +27dBu

Maximum Input Level
Balanced inputs  +30dBu
Unbalanced inputs  +20dBu

Impedances
Balanced inputs  30k Ohms
Unbalanced inputs  50k Ohms
Balanced outputs  300 Ohms
Minimum load impedance  300 Ohms

DIGITAL TO ANALOG CONVERTER FIXED OUTPUTS
Output Levels
 
User selectable (0dBFS)  +16dBu / +24dBu
Fixed output trim range (0.5dB steps)  -95.5dB to +30dB

THD+N
1kHz, -1dBFS, 20-22kHz bandwidth (44.1kHz)  0.00%

Dynamic Range
20-22kHz bandwidth  >111dB

Input Lock Range
AES3/SPDIF  32kHz to 192kHz
TOSLINK  32kHz to 96kHz
ADAT LIGHTPIPE  30kHz 55kHz

S-Lock Sample Clock Intrinsic Jitter
20-22kHz bandwidth  <25ps

S-Lock Sample Clock Jitter Rejection  
1kHz sine jitter  -40dB
   
S-Lock Supported Sample Rates

AES3, SPDIF  44.1, 48, 88.2, 96, 176.4, 192kHz
TOSLINK  44.1, 48, 88.2, 96kHz
ADAT LIGHTPIPE  44.1, 48kHz

s-Lock™ Capture Range
44.1, 48kHz  +/- 10Hz
88.2, 96kHz  +/- 20Hz
176.4, 192kHz  +/- 40Hz

Word Clock / Superclock Input
Impedance (switchable)  75 Ohms / 1M Ohms
Minimum Voltage  3V peak to peak
Maximum Voltage  5V peak to peak
Word clock frequencies supported 44.1, 48, 88.2, 96, 176.4, 192kHz
Superclock frequencies supported 11.2896MHz, 12.288MHz (256x fs)

POWER SUPPLY / MECHANICAL SPECS
Power consumption  60W
Input Voltage 50-60Hz  100, 120, 220, 230-240VAC

Dimensions
Main chassis IEC 2U  3.5" x 10.5" x 17"
Remot control unit  1.6" x 8" x 5.25"
Power supply unit  1.7" x 8.5" x 8.5"

Weight
Main chassis  14.1lbs / 6.4kg
Remote control unit  2.3lbs / 1kg
Power supply unit  6.5lbs / 2.9kg

Options:

  • M906L  AES loop option
  • M906DM  Downmix option

 

AES Loop Option for M906, Factory Installed Only
Grace Design M906L AES Loop Option for M906, Factory Installed Only
NOTE: This item will be factory installed when ordered with the M906.  Both items must be ordered at the same time.The m906 AES Loop-Thru option provides the user with four AES digital outputs via the rear panel multi-channel AES ...
395.00

Usually ships in 7-14 business days.
Need it sooner? Call us!
Free Shipping Available
Downmix Option for M906, Factory Installed
Grace Design M906DM Downmix Option for M906, Factory Installed
NOTE: This item must be factory installed when ordered with the M906.  Both items must be purchased at the same time.This m906 can be equipped with an optional DOWNMIX module that creates a stereo L+R mix of a 6 channel surround ...
350.00

Usually ships in 7-14 business days.
Need it sooner? Call us!
Free Shipping Available

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