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Grace Design m905 Reference Monitor Controller

The is our second generation stereo monitor controller, engineered from the ground up to provide unrivalled sonic purity with a comprehensive and powerful feature set.

Free Tech Support

$4,775.00

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Description

The is our second generation stereo monitor controller, engineered from the ground up to provide unrivalled sonic purity with a comprehensive and powerful feature set.

The m905 represents a new benchmark for audio playback quality. DAC performance is on par with the finest esoteric mastering equipment available. Our redesigned s-Lock™ PLL ensures ultra-low jitter clock regeneration. An asynchronous USB class 2 interface allows the m905 to act as the master clock of the computer's USB audio buss, effectively eliminating interface induced jitter for computer audio playback. And finally, meticulous analog circuitry measures with outstanding numbers in dynamic range, distortion and noise performance, ensuring bracingly open, detailed and musical playback of any input source.

All main audio and power supply circuitry is housed in a 2U rack mount mainframe, while system control is managed by a sleek, ergonomic remote control unit. This new RCU is a combination of dedicated hardware and a color graphical LCD display. All primary monitoring features are accessed via hardware switches and a rotary encoder, while all system information is presented by the graphic LCD and illuminated switches. This hybrid design allows for the solid feel and function of traditional hardware with the added power and functionality of a graphical user interface.

Now supported is DSD 128x (5.6448MHz) via DoP v1.1 (DSD over PCM frames). DSD audio can be sourced from the AES3, S/PDIF or USB digital inputs. While still a niche playback format, DSD has held its ground over the years, and now more and more content is available via download. And playback is now supported by a number of players. DSD sounds stunningly natural, especially rendered through the rest of the playback circuitry of the m905. So If you're the type to seek out this kind of fidelity, we can't recommend it enough.

The GUI is designed so that any engineer unfamiliar with the m905 can use the system immediately and confidently. Then with a minimal time investment, advanced functions can be accessed and controlled with ease. Additional features include: naming individual inputs and speaker outputs, calibrating level offsets of any input and output, setting preset levels, and much more. The setup menus only ever drill down one level, so the main operating screen is always one button away. And when returning to any previously visited setup menu, its previous edit status is remembered, keeping redundant navigation and editing to a minimum.

The m905 offers the ability to transfer up to 10 channels of digital audio (8-channels of ADAT and two of AES3, or S/PDIF or TOSLINK) over USB to a computer, making the m905 capable of operating as a standalone USB audio interface. This is an advanced feature as there are clock issues to be aware of, but it works and is documented in the owners manual.

With stunning sonic performance and timeless design, the m905 is a mark of genuine progress in the pursuit of high quality audio production. Intuitive, reliable and beautiful, it is the perfect studio centerpiece - home base for your ears, eyes and hands.

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

Specs

Input Channels6
Output Channels6
Analog Inputs5 x XLR, 2 x RCA
Analog Outputs5 x XLR, 1 x 1/4" (Headphones)
Digital Inputs1 x S/PDIF, 1 x ADAT, 1 x TOSLINK, 1 x XLR, 2 x AES/EBU
Digital Outputs1 x S/PDIF, 1 x AES/EBU
TalkbackYes
Form FactorRackmount
Height3.5" (Main Chassis), 2.2" (Remote Control)
Width17" (Main Chassis), 8.9" (Remote Control)
Depth10.5" (Main Chassis), 5.1" (Remote Control)
Weight7.8 lbs. (Main Chassis), 2.2 lbs. (Remote Control)
Manufacturer Part Numberm905

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