Your mix sounds great in your room, then you bounce it, play it in the car, and the low end is boomy.
On your phone it sounds thin. In earbuds the vocal is harsh.
So you reach for an EQ on the master and start making the kind of moves you would in a mix, a few dB here and there.
Now it translates even worse, because at the mastering stage those moves are huge.
Mastering EQ is the most delicate EQ you will do. It is tiny, broad moves on a finished stereo file, aimed at making the whole thing translate everywhere.
The method here is built around that delicacy. First, how mastering EQ differs from mixing EQ and the tiny-move rule that governs it.
Then balancing a master for streaming and translation and using reference tracks to stay honest.
TL;DR
- Think in fractions of a dB: mastering moves are usually 0.25–1.5 dB, rarely more than 3 dB.
- Use wide Q: broad curves shape the overall balance, not single instruments.
- Subtractive beats additive: gentle cuts sound more natural than boosts.
- Balance for translation: aim for a master that holds up on phones, cars, and earbuds.
- Reference everything: match your tonal balance to a finished commercial track.
The rest of this guide covers the tiny-move rule, mid-side EQ at the master, and how to reference a master so it translates on every device.
Mastering EQ Cheat Sheet
Here are the key mastering moves in one place. Every value is a tiny, broad move, since mastering EQ shapes the entire finished track at once.
Treat them as starting points, use wide Q, and always check against a reference.
| Frequency | What it does | Move |
|---|---|---|
| Below 20–30 Hz | Subsonic rumble | Gentle high-pass to protect headroom |
| 60–100 Hz | Warmth and weight | Tiny wide boost or cut to balance |
| 200–400 Hz | Mud, boxiness | Small wide cut if cluttered |
| 1–2 kHz | Energy, but harsh if pushed | Tiny boost for life, cut if honky |
| 3–7 kHz | Presence and clarity | Small boost, or cut if harsh |
| 10–16 kHz | Air and openness | Gentle high shelf for sheen |
Mixing vs Mastering EQ
Mastering EQ and mixing EQ look similar but do different jobs. Understanding the difference is what keeps you from over-processing a finished mix.
The key is what you have access to and how much your moves affect.
During mixing you have every track in front of you, so you fix problems at the source on individual elements.
At the mastering stage you have only the final stereo file, so every move affects the whole song at once, and the moves shrink accordingly.
If a problem is big enough to need a real fix, the answer is almost always to go back to the mix, not to push the master harder.
For the stage just before this one, see the guide to EQing the mix bus.
The Tiny-Move Rule
This is the rule that defines mastering EQ.
Because you are shaping an entire finished mix, the moves that work are far smaller than anything you would do in a mix.
Big boosts and cuts that fix one element will throw off the balance of the whole record.
Professional mastering engineers rarely move a frequency by more than 1.5 dB and often work in quarter-dB steps.
Use wide, gentle Q so the EQ shapes the overall tonal balance rather than a narrow band.
Favor subtractive moves, since a small cut sounds more natural to the ear than a boost. If you are reaching for more than 3 dB, the mix needs the work, not the master.
The Step-by-Step Process
Mastering EQ works best as a short, careful order: protect the bottom, clean up, then balance the tone.
Because the moves are tiny, restraint matters more than sequence, but a clear order keeps you focused.
This is the flow the rest of the guide follows.
- High-pass gently below 20–30 Hz to remove subsonic rumble and protect headroom.
- Cut mud with a small wide dip around 200–400 Hz if the mix is cluttered.
- Balance the lows with a tiny move around 60–100 Hz for warmth or control.
- Tame or add presence with a gentle move in the 3–7 kHz range.
- Add air with a high shelf at 10–16 kHz, then reference and check translation.
Make every decision against a reference and on multiple playback systems, since the whole point of mastering EQ is translation.
Subtractive EQ: Clean Up Gently
The safest mastering moves are small cuts.
When a finished mix has a buildup the ear finds fatiguing, a gentle subtractive move smooths it without the unnatural feel of a boost.
This is where most mastering EQ work happens.
- High-pass below 20–30 Hz: remove rumble that wastes headroom before the limiter.
- Cut 200–400 Hz: a small wide dip clears mud and opens up a congested master.
- Tame harshness 2–5 kHz: a gentle cut smooths a master that fatigues the ear, especially on earbuds.
Keep every cut wide and tiny.
A broad, gentle EQ such as a Pultec-style unit suits the master perfectly, and the Pultec EQ guide covers the musical curves that flatter a finished mix.
Tonal Balance for Translation
The goal of mastering EQ is a tonal balance that holds up everywhere, not a sound that only works in your room.
A master that is bright on your monitors may be harsh on earbuds, and one that is full on your speakers may be boomy in a car.
Small tonal moves fix this.
- Low end, 60–100 Hz: a tiny adjustment balances warmth and weight so the master is full but not boomy.
- Presence, 3–7 kHz: a small boost adds clarity, a small cut tames harshness for earbud listeners.
- Air, 10–16 kHz: a gentle high shelf adds the open, expensive sheen of a finished record.
Check each move on as many systems as you can, since translation is the whole job. What sounds right on one speaker has to hold up across all of them.
Mid-Side EQ at the Master
Mid-side EQ is a powerful mastering tool because it lets you shape the center and the sides of the finished image separately.
The center holds the kick, bass, and lead vocal, while the sides carry width and ambience, so treating them independently can open a master up without raising overall level.
A tiny air boost on the sides widens and brightens without making the centered vocal harsh, and a small low-mid cut on the sides tightens the center’s low end.
Keep the moves even smaller than usual and check in mono constantly, since aggressive mid-side EQ can wreck mono compatibility for club and phone playback.
Used with restraint, it adds polish that standard EQ cannot.
Reference Tracks and Headroom
Two habits keep mastering EQ honest.
A reference track gives you a target, and proper headroom keeps your EQ moves from fighting the limiter.
Skip either, and you are mastering blind.
Pull up a commercial master in the same style, level-match it so it is not just louder, and match your tonal balance to it, switching back and forth often.
The same reference-track habit that keeps a mix honest keeps a master honest too.
Leave enough headroom before the limiter that your EQ boosts do not push the master into distortion, since a low-end boost especially eats headroom fast.
Build both habits in early and your mastering EQ decisions stay grounded instead of guesswork.
3 Common Mistakes
A few habits turn mastering EQ from polish into damage. Avoid these and the tiny moves do their job.
1. Making mix-sized moves. A 4 dB cut belongs in the mix, not the master. If a problem needs that much EQ, go back to the mix and fix it at the source.
2. Mastering without a reference. Your ears adapt fast, so the balance drifts toward whatever you have been hearing.
A level-matched commercial reference keeps the tonal balance honest.
3. Ignoring headroom. EQ boosts add level, and on a master headed into a limiter that eats your headroom and invites distortion.
Leave room, and favor cuts over boosts.
Frequently Asked Questions
Quick answers to the questions that come up most when EQing a master.
How much EQ should you use when mastering?
Very little. Most mastering EQ moves fall between 0.25 and 1.5 dB, and rarely exceed 3 dB.
Because you are shaping the entire finished mix at once, even a tiny move has a big effect, and a large one throws off the balance of the whole record.
Use wide Q, favor gentle cuts over boosts, and if you need more, go back and fix the mix instead.
What is the difference between mixing and mastering EQ?
During mixing you have every track available, so you fix problems on individual elements with whatever moves they need.
Mastering EQ works on the final stereo file, so every move affects the whole song, and the moves shrink to fractions of a dB.
Mixing EQ builds the balance; mastering EQ is the final, gentle polish that makes the finished mix translate everywhere.
What frequencies should you EQ when mastering?
Common starting points are a gentle high-pass below 20–30 Hz, a small cut around 200–400 Hz for mud, and a high shelf at 10–16 kHz for air.
A tiny move around 60–100 Hz balances the low end, and a small adjustment in the 3–7 kHz range handles presence or harshness.
Keep every move wide and under about 1.5 dB, and confirm it against a reference.
Should you cut or boost when mastering?
Favor cuts. Subtractive EQ generally sounds more natural to the ear than boosting, and on a master it also protects headroom, since boosts add level that eats into your limiter ceiling.
Use small, wide cuts to remove mud or harshness, and reach for gentle boosts only for air or a touch of presence.
When in doubt, cut the problem rather than boosting around it.
Do you EQ before or after the limiter when mastering?
Tonal EQ usually goes before the limiter, so you shape the balance and the limiter responds to a clean signal.
Leave enough headroom that your EQ boosts do not slam the limiter and cause distortion.
Some engineers add a tiny corrective EQ after the limiter to fine-tune the final tone, but the main tonal shaping happens first.
How that limiter and compressor are dialed in is its own craft, covered in compressor settings for mastering.
Either way, keep the moves small.
How do you make a master translate to all devices?
Aim for a balanced tonal curve and check it everywhere. Use small EQ moves to control boomy lows, harsh upper mids, and dull or overly bright highs.
Then audition the master on monitors, headphones, a phone speaker, earbuds, and a car if you can.
Match the balance to a commercial reference in the same style. A master that holds up across all of those will translate for listeners too.
The Bottom Line
Mastering EQ is the gentlest, most disciplined EQ you will do.
Work in fractions of a dB with wide Q, favor cuts over boosts, and balance the master so it translates on every system.
Reference constantly, protect your headroom, and fix anything bigger back in the mix.
Do that and your master sounds polished, balanced, and consistent wherever it plays.
Mastering EQ is the final tonal stage of a finished record, and it rests on the same fundamentals as every mix move that came before.
The complete EQ guide walks those fundamentals from a single instrument up to the full mix.
The master needs more than EQ, though.
The full mastering guide covers the limiting, metering, and loudness work that surrounds it.