How to Master a Suno Rock Song
Published · by Loopin
Suno rock songs fail in two predictable places: fizzy guitars that turn to static when you push loudness, and drums that lose their hit under the limiter. Fix the fizz first, limit less than you think, and a rock export can land at −11 LUFS without collapsing.
Find the fizz at 2–4 kHz and cut it
Generated distorted guitars often carry a gritty, papery layer between 2 and 4 kHz, plus a hiss-like band around 6–8 kHz. On a quiet export it sounds like energy. After a limiter adds 4–5 dB of gain, it sounds like a broken speaker. Sweep a narrow boost across 2–4 kHz, find the ugliest spot, and cut it 1.5–3 dB with a moderate Q.
If the vocal also lives in that band and dulls, switch to a dynamic EQ that only cuts when the guitars get loud, or apply the cut to the side channel only, since rhythm guitars are often spread wide while the vocal stays centred.
Separate the kick from the bass guitar
Rock needs the kick to punch through a wall of guitars, and Suno exports often blur kick and bass into one low thump around 60–120 Hz. A small cut of 1–2 dB at 200–300 Hz reduces the boxy overlap, and a gentle high-pass at 25–30 Hz removes rumble that eats limiter headroom for no audible benefit.
Don’t boost the low end to make the drums bigger. Every dB you add below 100 Hz is a dB the limiter has to pull back, and it’ll pull it back on every kick hit, which is exactly how rock masters lose their punch.
Fold to mono before you push loudness
Wide double-tracked guitars can partly cancel in mono, and Suno’s stereo image isn’t always phase-safe. Sum the export to mono for a chorus. If the guitars drop sharply or the song suddenly sounds like it’s underwater, narrow the stereo width a little, especially below 200 Hz, where nothing should be wide.
This matters because plenty of people hear rock on a single Bluetooth speaker. A master that sounds huge on headphones and hollow on one speaker isn’t finished.
Limit for punch, not for a number
Rock can sit louder than pop without complaint, but watch gain reduction on the snare: if the limiter is taking more than 3–4 dB off every hit, the drums flatten and the chorus stops feeling bigger. The fastest way to hear the trade-off is to put the song through free online mastering and flip between Punchy (about −11 LUFS) and the default at about −14 LUFS on the loudness-matched A/B.
For garage, grunge or anything that should feel worn in, try Vintage. For heavier, wall-of-sound choruses try Wide. If the snare sounds smaller in the louder version once levels are matched, the quieter master is the better record.
Check it where rock actually gets played
Play the master in a car at driving volume. Rock is where muddy low mids and fizzy guitars both show up at once. If the guitars hurt at volume, cut another dB at 2–4 kHz in the mix. If the kick disappears, the low end is too crowded, not too quiet.
Once it survives the car, run it through the free masterer again from the corrected mix and download the WAV. For live-band rock rather than AI exports, our rock mastering guide covers the same moves with real drum overheads in the picture.
Frequently asked questions
How loud should a Suno rock song be?
About -14 LUFS integrated is safe everywhere. Rock often sounds fine at about -11 LUFS as long as the limiter isn't taking more than 3-4 dB off the snare. Keep true peak at -1 dBTP.
Why do Suno guitars sound fizzy?
Generated distortion often carries a gritty band at 2-4 kHz and hiss around 6-8 kHz. Mastering loudness exaggerates it. Cut 1.5-3 dB at the worst spot before limiting.
Why do my drums lose punch when I master rock?
The limiter is clamping every kick and snare hit. Remove sub-30 Hz rumble, avoid low-end boosts, and back off loudness until the snare keeps its crack.
Which Loopin feel suits rock?
Punchy (about -11 LUFS) for modern rock, Vintage for garage or grunge, Wide for big wall-of-guitar choruses. Compare them level-matched.
Should rock guitars be wide in the master?
Wide above about 200 Hz is fine. Check mono: if the guitars drop sharply when summed, narrow the width slightly so single-speaker listeners still hear them.
Should I high-pass a Suno rock master?
Yes, gently: a high-pass at 25-30 Hz removes inaudible rumble that eats limiter headroom. Don't go above about 35 Hz or the kick loses weight.