Upload a track

What to upload and how to prepare your mix for mastering.

Drop your final mix onto the mastering page. WAV, MP3, FLAC, OGG, M4A/AAC and Opus work, up to 250 MB. The file is decoded and processed in your browser — it isn't uploaded.

For the best result:

Export a WAV at the session's sample rate (24-bit if you can).
Leave some headroom — peaks around −6 to −3 dBFS — and switch off any limiter on your master bus.
Fix mix problems (a harsh vocal, a boomy bass) in the mix. Mastering polishes; it can't rebalance individual instruments.