Grace Design m905 Stereo Reference Monitor Controller (silver)

Reference monitor controller

The m905 is Grace Design's stereo monitor controller, that provides audio playback performance with a comprehensive and intuitive feature set.

It includes all professional audio inputs and outputs, analog and digital, with an asynchronous USB input for jitter free 24-bit/192 kHz computer playback. The output section supports 3 stereo speaker sets, two subwoofer, and includes Grace Design's reference headphone amplifier.

The remote includes a headphone output, talkback microphone, and a real time SPL meter. Controls are intuitive and easy to use.

The m905 offers more monitoring management features than any current monitor controller.

Specifications: 

• Analog inputs – unbalanced (standard or the optional RIAA phono input), balanced (2nd pair balanced available on m905 Analog), CUE, talkback mic
  
• 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
  
• Digital loop thru outputs that can be configured to pass incoming digital signals or as a digital speaker output when monitoring digital PCM sources
  
• 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 the monitor level
  
• Detachable RCU tilt base