Audio Interchange File Format (AIFF) is Apple's uncompressed audio format, offering CD-quality sound for professional audio production.
AAX files are built around lossy compression. Designed for audible audiobooks, digital spoken word, they use the audio/x-aax MIME type and typically range from varies by content.
Reach for AIFF when your priority is professional audio production, music recording — its uncompromising quality ensures every detail is preserved.
Reach for AAX when your priority is audible audiobooks, digital spoken word — its efficient compression makes sharing fast and storage minimal.
Learn more about AIFF and AAX formats in our detailed guide.
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AIFF (AIFF audio) - Audio Interchange File Format, professional uncompressed audio. Best for professional audio production, music recording.
AAX (AAX) - Audible Audiobook, encrypted AAC audiobook format. Ideal for audible audiobooks, digital spoken word.
Yes, GoConvertFile offers free conversion of AIFF to AAX for files up to 100MB. No registration required.
Most AIFF to AAX conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
AAX is ideal for audible audiobooks, digital spoken word. Audible Audiobook, encrypted AAC audiobook format
Yes, converting AIFF to AAX uses lossy compression, which reduces file size by discarding some visual data. Set quality to 85-95% for a good balance of quality and file size.
AAX files are typically 50-80% smaller than AIFF files because AAX uses efficient lossy compression. The exact reduction depends on quality settings.