Mix and Master Free. AI Mix & Mastering Online

Upload your stereo mix. AI masters it to Spotify, Apple Music, TikTok, or 9 more platforms. Download WAV or MP3. Free, no login, no watermark.

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Mixing vs. Mastering. What's the difference?

These two words get used interchangeably but they're distinct stages. Understanding them helps you get better results from any tool.

Mixing

Mixing works on individual tracks within a session. Balancing the volume of the kick vs. the snare, carving EQ space for each instrument, placing elements in the stereo field, adding reverb and effects. Mixing happens before you have a single stereo file.

Input: multi-track session (stems) · Output: stereo mix

Mastering

Mastering works on the final stereo mix. Applying subtle EQ, compression, limiting, and loudness normalization so the track sounds professional on every playback system and meets streaming platform specs. This is what MixMasterAI does.

Input: stereo mix (MP3/WAV) · Output: streaming-ready master

AI music generators like Suno and Udio output a stereo mix. So what you need is mastering, not mixing. Upload your Suno or Udio track above and the AI will master it to your target platform.

Upload a track to instantly master

Choose a file or drag it here

Supports WAV · FLAC · MP3 · M4A · AIFF