How to Master for Apple Music (-16 LUFS & Sound Check)

To master for Apple Music, target roughly -16 LUFS integrated with a true-peak ceiling of -1 dBTP. Apple Music's Sound Check normalizes playback to about -16 LUFS but only turns loud tracks DOWN, never boosts quiet ones up, so mastering artificially hot buys you nothing. For a hi-res badge, meet the separate Apple Digital Masters spec (24-bit source, -1 dBTP).

What LUFS does Apple Music use? (-16 LUFS Sound Check)

Apple Music's loudness normalization, branded Sound Check, references an integrated loudness of approximately -16 LUFS. That is notably quieter than the -14 LUFS reference used by Spotify, YouTube, Tidal and Amazon Music. Apple's choice tracks the AES TD1008 recommendation for streaming loudness, which favors a lower reference to preserve dynamics.

The practical meaning: if your master measures louder than -16 LUFS integrated, Sound Check will apply a negative gain offset to bring your track back toward that reference during playback. The measurement uses integrated (whole-song) LUFS per ITU-R BS.1770, the same gated algorithm every compliant meter uses. For the wider picture across services, see our LUFS streaming targets guide.

Does Apple Music turn your track up or only down?

This is the single most important — and most misunderstood — fact about mastering for Apple Music. Sound Check only turns tracks down. It does not turn quiet tracks up. Tracks louder than the -16 LUFS reference get attenuated; tracks quieter than -16 LUFS are left at their original level rather than boosted (Apple, via Production Expert's analysis, as of July 2026).

That behavior kills the loudness war on Apple's platform. Because there is no upward normalization, a brick-walled -8 LUFS master gains no perceived-loudness advantage — Sound Check simply turns it down to sit next to everyone else, and you are left with the squashed transients and reduced dynamics you traded away to get there. Meanwhile a track mastered near the -16 LUFS reference plays at essentially the same loudness with its punch intact. Mastering hot for Apple Music is all cost, no benefit. If you have wondered why your song sounds quieter after upload, the same normalization logic applies.

What is Apple Digital Masters (Mastered for iTunes)?

Apple Digital Masters (ADM), formerly called "Mastered for iTunes," is a separate quality program — not a loudness target. It is a set of encoding practices that helps your high-resolution source survive the conversion to Apple's AAC delivery format cleanly, and it earns a badge in the catalog metadata. It is delivered through your distributor or an Apple-certified provider, not something you toggle on yourself.

Apple recommends supplying the highest-resolution source you have — ideally 24-bit, at its native sample rate. Do not upsample: if you mastered at 24-bit/44.1 kHz, deliver that, because upsampling to 96 kHz adds nothing but file size (Sonarworks summary of Apple's spec, as of July 2026). Apple provides free tools to verify the result: the Master for iTunes droplet and afconvert for encoding, afclip for detecting clipped samples, and the AURoundTripAAC plugin to A/B your AAC against the source. Notably, ADM does not specify a LUFS target at all — its whole focus is headroom and clean encoding.

What true peak should you master to for Apple Music?

Set your limiter's true-peak ceiling to -1.0 dBTP, measured per ITU-R BS.1770-4 with inter-sample (ISP) detection enabled. This is Apple's own recommended maximum for Apple Digital Masters, and it is good practice for any Apple Music delivery.

The reason is lossy encoding. When your PCM master is transcoded to AAC, the process can nudge peaks upward, and inter-sample peaks that read below 0 dBFS in your DAW can reconstruct above 0 dBFS on playback, causing distortion. The 1 dB of headroom is insurance against both. Apple even recommends checking true peak on the encoded AAC output, not just the PCM source, because a master can pass on the source file yet clip after encoding. If the difference between sample peak and true peak is new to you, our true peak / dBTP explainer walks through it.

How to hit -16 LUFS without over-limiting

Reaching -16 LUFS integrated is usually about restraint, not aggressive limiting — most modern mixes are already louder than that, so you often need less limiting, not more. A clean approach:

• Balance and glue the mix first (tonal shaping, gentle bus compression) so loudness comes from a full spectrum, not from a limiter working overtime.
• Set the limiter ceiling to -1.0 dBTP with true-peak detection on.
• Bring gain up until the integrated reading sits around -16 LUFS, aiming for roughly 1-3 dB of gain reduction on peaks — not 6+ dB of constant crush.
• Measure the finished file: confirm integrated LUFS near -16, true peak at or below -1 dBTP, and check loudness range (LRA) so you have not flattened the dynamics.

If you also release to Spotify (-14 LUFS), you do not need two masters. A single master around -14 to -16 LUFS works fine everywhere: Apple turns a -14 master down about 2 dB (inaudible in context), and Spotify nudges a -16 master up toward its -14 reference. One honest, dynamic master serves every platform.

Master for Apple Music free and check the numbers

TrackGleam masters your track entirely in your browser — the audio never leaves your device, there is no upload, and no account. Its free master targets around -14 LUFS integrated with a -1.0 dBTP true-peak ceiling, and it measures and displays the finished file's integrated LUFS (BS.1770-4, gated), true peak in dBTP, and loudness range — real numbers you can re-verify in any meter before you release. That transparency matters when a platform like Apple normalizes to a specific reference.

Because you can preview the full result before deciding, you hear exactly how your master sits relative to the -16 LUFS Sound Check reference. Pair it with a distributor that offers Apple Digital Masters delivery for the hi-res badge, and you have covered both the loudness and the encoding side of Apple Music. Want the same treatment across a release? See bulk and album mastering.

Master a track free — no signup, nothing uploads