Description
The Allen & Heath SQ-Rack is a powerful 48-channel digital rack mixer designed for professional live sound, installed AV systems, and broadcast environments. Built around Allen & Heath’s advanced 96kHz XCVI FPGA processing core, it delivers ultra-low latency performance, exceptional audio quality, and flexible system integration within a compact rack-mount format.
Engineered for applications where a traditional control surface is not required, the SQ-Rack provides full mixing capability with remote control via apps and network interfaces, making it ideal for fixed installations, touring systems, and in-ear monitoring setups.
48-Channel Digital Mixing with 96kHz Processing
The SQ-Rack delivers 48 input channels with full processing, enabling complex audio systems to be managed from a single unit. It features Allen & Heath’s XCVI FPGA core, providing high-resolution 96kHz audio with ultra-low latency of approximately 0.7ms.
This ensures:
- High-definition audio clarity
- Phase-coherent mixing
- Reliable performance in demanding environments
Advanced Mixing Architecture
The mixer includes a comprehensive mixing structure with:
- 12 stereo mixes plus LR main output
- 3 stereo matrix outputs (split to 6 mono)
- 8 stereo FX engines with dedicated returns
This allows:
- Complex monitor mixes for live performance
- Multi-zone audio distribution
- Advanced signal routing for professional AV systems
Professional Input and Output Connectivity
The SQ-Rack features a robust onboard I/O configuration:
- 16 high-quality mic/line preamps
- 3 stereo line inputs
- 12 XLR outputs and additional TRS outputs
- AES digital output
The preamps offer up to +60dB of gain with phantom power, ensuring compatibility with a wide range of microphones and audio sources.
Expandable System with SLink and Networking
A key advantage of the SQ-Rack is its expandability. The integrated SLink port allows connection to Allen & Heath stage boxes and expanders, enabling systems to scale up to 48 mic inputs.
It also supports:
- 64x64 I/O audio networking
- Optional Dante, Waves or MADI expansion cards
- Digital split systems for FOH and monitor setups
This makes it suitable for both standalone and networked audio systems.
Integrated DSP and Effects Processing
The SQ-Rack includes eight stereo FX engines with access to Allen & Heath’s RackExtra FX library, offering high-quality reverbs, delays, and modulation effects.
It also supports DEEP processing plugins, allowing advanced compressor and preamp models to be embedded directly into channels for enhanced system performance.
Remote Control and App-Based Operation
Designed as a rack-based mixer, the SQ-Rack is controlled via:
- 7-inch touchscreen interface
- SQ-MixPad app for iPad, Android, Mac, and PC
- SQ-Control and SQ4You apps for user control
This enables:
- Full wireless system control
- Individual monitor mixing for performers
- Flexible operation without a physical console
This approach is particularly effective in installations or touring systems where space is limited.
Integrated Recording and USB Audio Interface
The SQ-Rack includes a 32x32 USB audio interface for multitrack recording and playback, making it suitable for studio and live recording applications.
It also supports direct recording to USB storage via SQ-Drive, allowing standalone capture of performances without external hardware.
Compact Rack-Mount Design
Housed in a compact 4U rack chassis, the SQ-Rack is designed for efficient installation and transport. Despite its small footprint, it delivers full-scale digital mixing capability comparable to larger console-based systems.
Ideal Applications
The Allen & Heath SQ-Rack is widely used in:
- Live sound and touring systems
- In-ear monitoring (IEM) rigs
- Corporate AV and conference environments
- Houses of worship
- Recording studios and broadcast setups
It is particularly suited to applications where remote control and compact system design are required.