AU Audio to MP2 conversion is the process of transforming audio files in the AU container/format (commonly used on Sun/Unix systems and by some audio workstations) into the MPEG-1 Audio Layer II (MP2) format. This conversion re-encodes the audio stream so it can be played or broadcast in applications, devices, or workflows that require MP2 while preserving as much of the original fidelity as possible.
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Read guide →Drag your .AU file from your computer or use the browse function.
Confirm .mp2 as the selected destination format.
Click "Convert" and download your converted .MP2 file once ready.
AU files typically use the audio/basic MIME type and store uncompressed or lightly compressed audio sampled in various bit depths. MP2 files have the audio/mpeg MIME type and use MPEG-1 Layer II compression codecs, commonly applied in radio broadcasting and digital TV. The MP2 format supports variable bitrates and is compatible with most media players and audio editing software.
The MP2 (.MP2) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like AU Audio.
While specific technical details aren't available here, MP2 files generally serve the purpose of storing audio effectively within their domain.
Our Online AU to MP2 Converter allows you to convert your AU Audio files into the widely compatible MP2 format effortlessly. Designed for quick and secure file processing, this tool supports seamless conversion without compromising audio quality or requiring software installation.
AU Audio files are primarily used in Sun Microsystems systems and often store raw audio data, which limits compatibility outside specialized environments. MP2, on the other hand, is a standardized lossy compression format widely supported by broadcasting and consumer devices, offering better file size management and playback versatility. While AU files can be large and less compatible, MP2 balances quality and compression efficiently.
Keep individual AU files under 250 MB for web-based free conversion to avoid upload timeouts; for large batches consider splitting files or using a desktop tool.
To preserve quality, match the output sample rate and channels to the source (e.g., keep 44.1 kHz → 44.1 kHz) and choose a higher MP2 bitrate (128–256 kbps) for stereo music.
For spoken-word or low-bandwidth needs, use 64–96 kbps mono MP2 to save space while maintaining clarity.
Batch conversion: convert multiple AU files at once when supported by the tool; process files with similar sample rates together to reduce transcoding artifacts and speed up processing.
This AU to MP2 converter made my editing workflow so much smoother.
Emily R.
Podcaster
Fast, reliable, and the output quality is excellent.
Mark G.
Audio Engineer
I love how easy it is to convert AU files to MP2 without installing anything.
Lisa M.
Musician
Start your free AU to MP2 conversion now.
Drag your file here to to upload.
Up to 250MB
Format limitation: AU can contain several encodings (mu-law, linear PCM); some web converters may not support rare AU encodings—verify compatibility or transcode to WAV/PCM first.