Suno song too quiet? How to make it louder without wrecking it
The most common complaint about Suno output is not the sound, it is the level: put a Suno WAV in a playlist and it comes on noticeably quieter than the song before it. Here is what is actually happening, measured, and the fix that does not add distortion.
· 5 min read
How quiet, exactly
We measured 20 Suno WAV downloads. Integrated loudness averaged about −15 LUFS, with true peaks around −4 dBTP. Commercial releases in the same genres sit near −9 to −10 LUFS with peaks at −1 dBTP. That is a 5–6 dB gap, which the ear hears as 'about half as loud'.
The good news is what that gap is made of. None of the 20 files were brick-walled, and the peak-to-loudness ratio was healthy. The track is quiet because it was never limited, not because it was damaged. That is the best possible starting point for mastering.
Why 'normalize' or 'gain +6 dB' is not the fix
Peak normalisation raises the file until the loudest sample hits 0 dBFS. With Suno's −4 dBTP peaks that gives you about 3–4 dB, and it leaves you with no headroom for the MP3/AAC encode, so inter-sample peaks clip on playback.
A plain gain boost of +6 dB pushes the peaks past 0 dBFS and clips them. You get the level, plus a hard, fizzy distortion on every transient.
What a master does instead is control the peaks first (limiting, a little compression, sometimes saturation) so the average level can come up while the peaks stay at −1 dBTP. That is how a commercial track can sit at −9 LUFS without clipping.
The right target depends on where it is going
| Destination | Target | Why |
|---|---|---|
| Spotify, YouTube, SoundCloud, TikTok | −14 LUFS, −1 dBTP | They normalise to about −14. Louder is turned back down. |
| Apple Music | −16 LUFS, −1 dBTP | Sound Check targets −16. |
| Local playback, DJ, sending to friends | around −9 LUFS | No normalisation, so the file's own level is what people hear. |
If you only make one file, −14 with a −1 dBTP ceiling is the safe choice: it plays at full level on streaming and is still clearly louder than the raw Suno export.
Loudness is only half of it
In the same measurements, Suno tracks were consistently thin below 350 Hz and 4–5 dB brighter than commercial masters above 6 kHz. Raise the level without fixing that and you get a loud, thin, slightly harsh track. A proper master adds low-end weight and tames the top before it limits, so the extra loudness sounds like a release rather than a louder demo.
Quiet is the easiest problem a Suno track has. Thin and bright are the ones that make it sound like AI.
FAQ
Can I just use a limiter plugin?
Yes, if you also handle the tonal balance and set the ceiling to −1 dBTP. A limiter alone gets you louder, not better. Check the result with a LUFS meter afterwards.
Will Spotify make my quiet track louder?
Spotify turns loud tracks down to about −14 LUFS but only turns quiet tracks up if there is peak headroom to do it. A −15 LUFS file with −4 dBTP peaks gets about +1 dB at most, so it still plays quieter than a properly mastered release.
Try it on your own track
Free 60-second preview. No account needed.