Convert AU to OPUS
Convert AU files to OPUS format online for free. No upload required, 100% private.
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Converting from AU (Uncompressed) to OPUS (lossy) will significantly reduce file size. Some audio quality will be lost, but the difference is often imperceptible at higher bitrates.
About AU
AU
Sun Microsystems Audio
AU is a simple audio format originally developed by Sun Microsystems for Unix systems. It supports both compressed and uncompressed audio.
Typical Use Cases
Pros
- • Simple format
- • Unix native
- • Lightweight
Cons
- • Outdated
- • Limited features
- • Poor cross-platform support
About OPUS
OPUS
Opus Interactive Audio Codec
Opus is a modern lossy audio codec optimized for both speech and music. It offers excellent quality at low bitrates and is ideal for real-time communication.
Typical Use Cases
Pros
- • Excellent low-bitrate quality
- • Low latency
- • Open source
- • Versatile
Cons
- • Limited device support
- • Newer format
- • Not all players support it