Dante vs. AES67: Simplified Comparison
The two major names in high-quality audio transmission over computer networks are Dante and AES67. While both focus on AoIP technologies, their approaches differ. Let’s explore what they are, how they work, and their key differences.
What is Dante?
Dante, developed by Audinate, is an audio networking solution originally known as Digital Audio Network Through Ethernet. It transmits uncompressed, high-quality audio through standard computer networks using Cat5 cables, delivering near-zero latency even when connecting multiple devices simultaneously. Dante is widely popular among professionals in live sound and recording studios thanks to features like device discovery, synchronized audio across devices, and straightforward system management.
What is AES67?
AES67, introduced by the Audio Engineering Society in 2013, is a standard designed to enable interoperability among different AoIP systems. Unlike Dante, AES67 is not a system but a set of guidelines manufacturers can follow to ensure their devices communicate with others. It bridges platforms like Dante, RAVENNA, Livewire, and others.
Key Technical Differences
1. Synchronization and Timing
- Dante: Uses PTPv1 (an older version of Precision Time Protocol) for sample-accurate device synchronization on the network.
- AES67: Utilizes the newer, more advanced PTPv2, better suited for larger and more complex networks.
2. Transport Protocols (How Audio is Sent)
- Dante: Transmits audio via RTP (Real-Time Transport Protocol) over UDP, supporting both unicast (one-to-one) and multicast (one-to-many) configurations.
- AES67: Also uses RTP but specifies exact settings to enable interoperability between different systems.
3. Audio Quality and Formats
- Dante: Supports 16-bit, 24-bit, and 32-bit formats with sampling rates up to 192 kHz, offering versatility for various applications.
- AES67: Prioritizes 16-bit and 24-bit audio with sampling rates of 44.1, 48, and occasionally 96 kHz—adequate for most needs but with fewer options than Dante.
4. Latency
- Dante: Offers highly adjustable latency, with a minimum of 150 microseconds depending on the network and setup.
- AES67: Has a typical minimum latency of 125 microseconds, though real-world setups often experience delays of 2-3 milliseconds.
5. Device Discovery and Control
- Dante: Features Dante Controller, a centralized, user-friendly tool for finding, naming, and managing devices on the network.
- AES67: Does not have a standardized method for device discovery or control, often requiring manual configuration with tools like Bonjour or Session Announcement Protocol.
6. Prioritizing Audio Traffic
- Dante: Includes built-in Quality of Service (QoS) tools to prioritize audio traffic, ensuring smooth performance even on busy networks.
- AES67: Recommends but does not enforce QoS, leading to varying performance across different systems.
Interoperability (Working Together)
Many Dante devices feature an AES67 mode, allowing compatibility with non-Dante devices supporting AES67. However, this mode may increase latency and limit some of Dante’s advanced features. Not all Dante devices include AES67 functionality, so it’s important to check with the manufacturer.
When Should You Use Dante or AES67?
- Dante: Best for users seeking an all-in-one, intuitive solution, particularly in professional environments like live performances, recording studios, and large event spaces.
- AES67: Ideal for integrating systems from multiple manufacturers. If you already have equipment from various brands, AES67 helps bridge the gap.
Dante is like an all-inclusive resort, ready to use and seamlessly integrated within its ecosystem. AES67, on the other hand, acts as a translator, enabling communication between different systems. Both have their strengths, and the right choice depends on your specific needs and setup.