Grace Design m905 Stereo Reference Monitor Controller

• VIDEO
• FEATURES
• TECH SPECS
• SYSTEM REQUIREMENTS

• Grace Design m905 PRODUCT FEATURES:

  Analog inputs - unbalanced, balanced, CUE, talkback mic (additional balanced input available on the m905 Analog)
  Digital inputs - 2x AES3 (Single or dual-wire), 1 S/PDIF, 1 TOSLINK, ADAT (selectable in 4 pairs, or 2 pairs in S/MUX), USB, DSD128 (5.6448MHz)
  Audio circuitry designed for completely transparent and musical playback performance
  Asynchronous Class 2 USB playback supports up to 24 bit/192kHz
  Mastering quality DAC circuitry with configurable de-emphasis filtering
  s-lock dual-stage Phase Lock Loop for ultra low jitter clock regeneration
  Hybrid RCU with hardware switches, large level encoder and graphical LCD
  LCD display shows input, level, output, SPL and DAC status plus a full calibration menu
  RCU includes built in microphone for talkback and onboard SPL meter
  SPL meter features include level, peak, fast and slow modes, A & C weighting
  Precision .5 dB step level control for speakers and headphones
  Reference headphone amplifier circuitry, with outputs on both the RCU and ACU
  Dedicated mono, dim, mute and sub mute switches
  Mono mode can be set to L+R summed, L only in both channels, or R only in both channels L solo, R solo, L-R and sub solo modes are available
  3 available stereo speaker outputs, with two assignable mono sub outputs (or single stereo sub output)
  Multi-mode SUB/ DAC/ METER out
  SUB out mode for stereo or multiple mono subwoofer outputs
  DAC out mode for a fixed DAC output fed by the selected digital input
  METER out mode fed by selected input signal (digital or analog), configurable with a fixed level or to follow yhe monitor level
  Detachable RCU tilt base

• Grace Design m905 TECHNICAL SPECIFICATIONS:

  POWER SUPPLY / GENERAL
  Power consumption 60W
  Input Voltage 50-60Hz 100VAC – 240VAC
  Dimensions
  Main chassis IEC 2U 3.5" x 10.5" x 17"
  Remote control unit 8.9" x 5.1" x 2.2"
  Weight
  Main chassis 7.8lbs
  Remote control unit 2.2lbs

• Grace Design m905 SYSTEM REQUIREMENTS:

  us directly at 303.443.7454 Monday through Friday 9 – 5, MST. Using the m905 for DAW playback us directly at 303.443.7454 Monday through Friday 9 – 5, MST. Using the m905 for DAW playback With the extremely high quality audio playback achieved with this USB interface, the m905 can be great option as an stereo output device directly from your digital audio workstation. For playback only, this will work very well. However, using it in conjunction with other USB audio devices connected to your workstation computer's USB will require some adjustments to your computers audio seer's USB buss gets synced. So the computer is now synced to a crystal-based audio clock signal and the systems works with dramatically lower jitter. No phase-lock loop or sample rate conversion necessary, which means bit-perfect playback from a computer with zero interface-induced jitter.
  
  Computer Audio Requirements
  Regardless of the type of computer you will use to playback audio from, it must have at least one available USB port. The m905 ships with a standard USB type A to type B cable. The type A connector plugs in to the computer and the type B connector to the USB m905 input.
  
  The m905's asynchronous mode USB DAC supports standard driverless operation on MAC to 192kHz and on PC to 96kHz. For sampling rates above 96kHz, PC users will need to download and install a free driver on their computer. This driver can be found on our website - http://www.gracedesign.com/support/support.htm
  Driverless operation basically means 'plug and play'. The m905 will automatically show up in your computer's list of supported audio devices as 'Grace Audio Device'. In most cases, simply choose that as your audio playback device and the system will work.
  
  Different operating systems may pose their own set of complications in setting up the m905 as the audio playback device. In the event that 'plug and play' operation does not occur, you will need to look at some specific setup variables for your OS. In this case, we will direct you to a very well written and comprehensive docu•ment by our friend and colleague Charlie Hanson from Ayre Acoustics. http://www.ayre.com/USB.htm. This is an invaluable resource for computer/USB audio setup information for most all current operating systems, and we strongly urge you to familiarize yourself with the information pertaining to your specific OS.
  
  Another excellent resource is Wavelength Audio's website: http://www.USBdacs.com
  In the event that you have any setup issues which aren't addressed by these resources, feel from to contact us directly at 303.443.7454 Monday through Friday 9 – 5, MST.
  
  Using the m905 for DAW playback
  With the extremely high quality audio playback achieved with this USB interface, the m905 can be great option as an stereo output device directly from your digital audio workstation. For playback only, this will work very well. However, using it in conjunction with other USB audio devices connected to your workstation computer's USB will require some adjustments to your computers audio settings and for best results, some external clock routing between audio devices.
  For Mac OS X, this is achieved by setting up the m905 in an 'aggregate audio device' setup, with the m905 as the output device. For Win 98 – Win 7, you must use 'asio4all' drivers- http://www.asio4all.com/. There is currently no support yet for windows 8.
  
  With both of these setups, if you are using multiple I/O devices, you will need to pay careful attention to clocking. In Mac / Core audio aggregate setups, you are able to set which device is the clock master. However, this means that other devices will be sample rate converted, which we do not recommend.

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