Grace Design m905
Stereo reference monitor controller
Monitor Controller$4,194Manufacturer list price
Specifications
- Type
- Monitor Controller
- Description
- Stereo reference monitor controller
- Topology
- mastering-quality DAC circuitry with configurable de-emphasis filtering; s-Lock dual-stage PLL clock regeneration
- Signal path
- Digital (recallable / digitally controlled)
- Channels
- 2
- Channel format
- stereo
- Form factor
- rack + remote control unit
- Rack units
- 2U
- Connection
- AES3, S/PDIF, TOSLINK, ADAT, USB Class 2 (async, acts as master clock)
- Sample rate (kHz)
- 44.1, 48, 88.2, 96, 176.4, 192
- Bit depth
- 24
- Power (W)
- 60
- Impedance (Ω)
- balanced inputs 88k ohm; outputs 300 ohm
- Country of manufacture
- USA (Lyons, Colorado)
Details
Controls: hybrid remote control unit (RCU) with dedicated hardware switches, rotary encoder, graphical LCD; built-in SPL meter (level/peak, fast/slow, A & C weighting); mono modes (L+R sum, L-only, R-only, L/R solo, L-R, sub solo); mono/dim/mute/sub-mute switches
I/O: Digital in: 2x AES3, 1x S/PDIF, 1x TOSLINK, ADAT Lightpipe (4 or 2 pair selectable), USB Class 2 async. Analog in: unbalanced (optional RIAA phono), balanced, CUE, talkback mic. Out: 3 stereo speaker outs, headphone out on RCU and main chassis.
Notes: Price $4194 for full digital/DAC version (Sweetwater model m905-BK, July 2026). An analog-only variant ('m905 Analog', no DAC) is also sold, listed at $3356. THD+N 0.0006% @1kHz -1dBFS. Dynamic range 117dB (20-22kHz, AES17) / 119dB A-weighted. Output level user-selectable -76 to +26dBu in 0.5dB steps. DSD support: DSD128/DSD64 via DoP v1.1. Main chassis dims 3.5x10.5x17in / 7.8lbs; RCU 8.9x5.1x2.2in / 2.2lbs. Optional RIAA phono module. Standard 5-year warranty, optional 20-year EON warranty.