Grace Design M905 Black

A Second-Generation Reference for Precision Monitoring

Designed as the studio's nerve center, the m905 carries the DNA of high-end controllers while integrating modern refinements. Its architecture cleanly separates conversion, clock, and control to ensure a stable stereo image, extremely low noise level, and reliable volume consistency from session to session.

Who Is It For and What Are Its Uses?

The m905 is aimed at demanding artistic directors, mixers, and mastering engineers, as well as high-end home studios. It facilitates quick evaluation of takes, instant switching between multiple speaker pairs, 2.1/3.1 listening with sub(s), and precise A/B comparisons on headphones thanks to crossfeed and level control in 0.5 dB steps.

Key Features for a Modern Workflow

Conversion and Asynchronous USB 24/192

The asynchronous USB 2 port ensures a stable connection with the computer and faithful conversion up to 24-bit/192 kHz. The "mastering quality" DAC is paired with a configurable de-emphasis filter, while the two-stage S-lock phase-locked loop secures clock recovery to reduce jitter and preserve dynamics.

Control, Ergonomics, and Measurement

The hybrid control unit offers dedicated controls for essential functions and a clear LCD screen displaying inputs, levels, outputs, SPL, and calibration menus. An integrated microphone performs real-time SPL measurements (level, peak, fast/slow modes, A/C weighting), ideal for precisely calibrating your speakers.

Speaker, Subwoofer, and Utility Output Management

Three stereo speaker outputs-two configurable as 2.1-allow adapting your monitoring to each project. The "DAC out" (fixed DAC output), "METER out" (output dedicated to analyzers) modes, and SUB out options enable configurations with multiple stereo or mono subwoofers. A digital Loop Thru output facilitates signal distribution to other devices.

Technical specifications

Bluetooth

No

Inputs

USB, stereo minijack, talkback, microphone

Analog	unbalanced, balanced, CUE, talkback microphone.	Integrated SPL measurement	level, peak, fast and slow modes, A and C weighting.
Digital	2x AES 3, 1x S/PDIF, 1x TOSLINK, ADAT (selectable 4 pairs or 2 pairs in SMUX).	Switches	mono, dim, mute, sub mute.
USB	optimized circuit for transparent and musical playback; asynchronous USB 2 port up to 24-bit/192 kHz.	Mono mode	sum L+R or L or R on both channels.
Displays	input status, levels, outputs, SPL, converter; calibration menu.	Digital Loop Thru output	fixed input (AES, S/PDIF, TOSLINK) or mirrored from the selected digital input.