Grace Design
Grace Design m908 Ravenna
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Grace Design m908 Ravenna is a multi-channel monitor controller with a Ravenna/AES67 network module, supporting formats from stereo to Dolby Atmos and Sony 360RA, up to 22.2. The configuration without ADC modules integrates the system into an audio-over-IP infrastructure via 32 Ravenna/AES67 network channels, retaining full standard digital and analog I/O and a complete DSP complement for room correction and bass management.
Multi-channel immersive monitoring on a Ravenna/AES67 network
An engineer working in a Merging Ravenna or AES67/SMPTE ST2110 environment needs a monitor controller integrated into the network without extra converters and analog cabling. The m908 Ravenna delivers reference D/A conversion with a fourth-generation s-Lock PLL synchronised to the network clock, 12 bands of parametric room correction EQ across each of 24 channels — 288 bands in total in 64-bit fixed-point filters — and full support for Dolby Atmos and formats up to 22.2. Thanks to AES67/SMPTE ST2110 compliance the module also works with Dante in AES67 mode and other audio-over-IP networks.
Flexible I/O and full session control
Built around the Merging ZMAN card, the module provides 32 channels of network audio I/O up to 192 kHz over two Gigabit Ethernet ports with full redundant mode support. Standard digital inputs cover 68 channels via AES3, ADAT, USB, S/PDIF and TOSLINK. 16-channel balanced analog outputs and 24-channel AES3 Out handle active monitors and external processors. Free ADC slots allow future expansion to 16 analog input channels. Sonarworks SoundID Reference integration, a driver-free web interface and an RCU remote with talkback, SPL meter and up to 8 CUE paths round out session control.
KEY FEATURES
- Multi-channel monitor controller from stereo to 22.2, Dolby Atmos, Sony 360RA
- Ravenna/AES67 network module (Merging ZMAN): 32 channels I/O up to 192 kHz
- AES67/SMPTE ST2110 compliance and Dante in AES67 mode
- Two Gigabit Ethernet ports (Primary and Secondary), full redundant mode
- Fourth-generation s-Lock PLL for vanishingly low jitter
- 12 bands of parametric room correction EQ per channel, 288 bands total
- 64-bit fixed-point filters for room correction and bass management
- Free ADC slots for future expansion to 16 analog input channels
- Sonarworks SoundID Reference integration (firmware 2.2.2+)
- Driver-free web interface, RCU remote with talkback and SPL meter
TECHNICAL SPECIFICATIONS
- Manufacturer: Grace Design
- Type: multi-channel immersive / stereo to 22.2 monitor controller
- Configuration: m908 Ravenna (ACU + RCU + PSU), no ADC modules
- Standard digital inputs: 24-channel AES3, 16-channel ADAT, 24-channel USB, AES3/S/PDIF/TOSLINK stereo
- Analog inputs: none in this configuration (slots free, expandable to 16 channels)
- Ravenna module: 32 channels In/Out, 44.1-192 kHz, Merging ZMAN, 2x Gigabit Ethernet
- Redundant mode: full, on a separate port
- Standard outputs: 16-channel balanced analog, 24-channel AES3, 24-channel USB2
- DSP processor: 24 channels simultaneously, up to 192 kHz / 24 bit
- Room EQ: 12 bands per channel, 64-bit fixed-point filters, 288 bands total
- Clocking: 4th-generation s-Lock PLL, word clock BNC In/Thru-Out
- Control: web interface, RCU remote, GPIO
- Talkback: built-in mic in RCU, external 1/4" TRS input
- Power supply: dual-redundant, 100-240 V AC
