Sonifex RB-DD4 – 4-Channel AES/EBU Digital Audio Delay
The Sonifex RB-DD4 is a high-performance, 4-channel AES/EBU digital audio delay unit designed for professional broadcast and production environments. It allows for precise audio synchronization with fully independent delay control for each channel pair. Engineered for flexibility, the RB-DD4 is ideal for aligning audio feeds during live broadcasting, lip-sync correction, or timed playout scenarios where millisecond accuracy is critical.
Each pair of digital inputs can be delayed by up to 10.5 seconds in 1 ms increments, with intuitive front-panel controls and clear LED status indicators. The unit offers transformer-balanced AES/EBU digital XLR inputs and outputs, and features a robust 1U rackmount chassis suitable for integration into demanding studio setups. With support for 32kHz to 96kHz sample rates and bit depths up to 24-bit, the Sonifex RB-DD4 guarantees exceptional audio quality while meeting the exacting demands of modern digital workflows.
Whether you’re working in radio or TV broadcasting, post-production, or live event coverage, the Sonifex RB-DD4 gives you the accuracy and reliability required to keep your audio precisely in sync.
✅ Key Features
• 4 Independent AES/EBU digital audio channels
• Delay range of 0 – 10.5 seconds in 1ms steps
• Separate delay control for each channel pair
• AES/EBU transformer-balanced XLR inputs and outputs
• Front panel control with LCD display and status LEDs
• Sample rate support from 32kHz to 96kHz
• 24-bit audio resolution
• 1U 19″ rackmount chassis
• Remote control via RS232 interface
• Ideal for lip-sync correction and digital playout alignment
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