Musepack (MPC) is an efficient lossy audio codec that offers excellent quality at medium bitrates, popular in the early 2000s.
Sun AU is the native audio format for Sun Microsystems workstations, using simple mu-law encoding or uncompressed PCM.
Reach for MPC when your priority is music archival with good quality-to-size ratio — its efficient compression makes sharing fast and storage minimal.
If legacy unix audio, sun workstation sound is your end goal, AU is the smart pick. Its exacting standards ensure your output matches your input at every stage.
Learn more about MPC and AU formats in our detailed guide.
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MPC (Musepack MPC) - Musepack, efficient lossy audio compression. Best for music archival with good quality-to-size ratio.
AU (AU audio) - Sun AU, legacy Unix audio format for Sun workstations. Ideal for legacy unix audio, sun workstation sound.
Yes, GoConvertFile offers free conversion of MPC to AU for files up to 100MB. No registration required.
Most MPC to AU conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
AU is ideal for legacy unix audio, sun workstation sound. Sun AU, legacy Unix audio format for Sun workstations
No, converting MPC to AU does not cause additional quality loss — AU uses lossless compression. However, any artifacts already present in the original MPC file will persist in the AU output.
AU files are typically 2-5x larger than equivalent MPC files because AU preserves all pixel data. This is expected and necessary for lossless quality.