EQ Tips for Mixing: How to EQ Every Track in Your Mix

EQ is the most-used tool in mixing — and the most abused. Beginners tend to boost in search of "better" sounds. Professionals cut to create space. The difference in philosophy is significant.

This guide covers practical EQ techniques you can apply immediately, plus a frequency reference map for every instrument in a standard mix.

What EQ Actually Does

An EQ (equalizer) lets you boost or cut specific frequency ranges within an audio signal. Think of the frequency spectrum from 20 Hz (sub-bass) to 20,000 Hz (20 kHz, high air). Every sound occupies a range within that spectrum.

The purpose of EQ in a mix is not to make individual tracks sound great in isolation — it's to make them work together. A bass guitar and a kick drum fight for the same space. A vocal and a synth pad both occupy the midrange. EQ helps you carve out space so each element is audible without competing.

Rule 1: High-Pass Filter Everything (Almost)

A high-pass filter (HPF) cuts everything below a certain frequency. Most signals — especially recordings made at home — contain low-end energy that has no musical value: mic handling noise, air conditioning rumble, vibration through a desk.

Even if you can't hear these frequencies consciously, they accumulate across dozens of tracks and make your low end murky and indistinct. High-passing everything except your kick, bass, and floor tom is the single fastest way to clean up a muddy mix.

Where to set high-pass filters:

• Vocals: 80–120 Hz (higher for female vocals: 120–150 Hz)
• Electric guitar: 80–100 Hz
• Acoustic guitar: 70–90 Hz
• Synth pads/strings: 100–200 Hz
• Room mics / overhead drums: 80–200 Hz
• Piano: 40–60 Hz (careful — piano has real bass notes)

Rule 2: Cut Before You Boost

Boosting a frequency adds energy to the signal. Cutting removes a problem. More often than not, what sounds like a track that needs more high-end brightness is actually a track that has too much mid-range mud masking it. Cut the mud and the brightness appears.

This isn't an absolute rule — sometimes you genuinely need to add a frequency that isn't there. But the instinct to reach for a boost should always be preceded by a question: "Is there something I should cut first?"

The Sweep-and-Cut Technique

This is the standard technique for finding and removing problem resonances:

1. Add a narrow-Q bell boost of +8 to +10 dB on your EQ
2. Slowly sweep it across the frequency range while the track plays
3. Listen for an ugly, honky, harsh, or "weird" tone that jumps out
4. Stop sweeping when you find it
5. Flip the boost to a cut: reduce it by 3–6 dB
6. Adjust the Q (bandwidth) until the cut sounds natural, not hollow

This technique works on every instrument. Run it on every track before reaching for anything else.

Frequency Map: What Lives Where

Range	Name	What Lives Here	Common Issues
20–60 Hz	Sub-Bass	Kick sub, 808, bass fundamental	Inaudible on laptop speakers; only kick/bass
60–120 Hz	Bass	Kick punch, bass body, floor tom	Muddiness if too many tracks have energy here
120–250 Hz	Upper Bass / Low Mids	Warmth of instruments, vocal chest	"Boominess" and mud accumulate here
250–500 Hz	Low Midrange	Guitar body, piano midrange, vocal warmth	"Cardboard box" sound; cut if things sound muddy
500 Hz–2 kHz	Midrange	Vocal presence, guitar attack, snare crack	Nasality, honkiness, aggressive harshness
2–5 kHz	Upper Mids	Vocal intelligibility, bite of instruments	Harshness and ear fatigue; harsh sibilance
5–10 kHz	Presence / Air	Vocal "cut", cymbal shimmer, string attack	Sibilance, cymbal harshness
10–20 kHz	Air	Room "air", cymbal sheen, breath	Digital harshness; cutting adds warmth

EQ Tips Per Instrument

Kick Drum

Boost 50–80 Hz for sub thump. Boost 2–5 kHz for click and attack. Cut 200–400 Hz if it sounds cardboard-y. High-pass nothing — the kick IS the low end.

Snare Drum

Boost 200–250 Hz for body and thickness. Boost 3–5 kHz for snap. Cut 500–800 Hz for that nasal "cardboard" tone that plagues snares recorded with a budget microphone. High-pass at 80–100 Hz.

Bass Guitar

The bass and kick drum must share the low end. One common approach: find the fundamental of the kick (usually 60–80 Hz) and notch the bass at that frequency slightly, and vice versa. This gives each element its own space. Boost 1–2 kHz for fret and string attack if the bass is getting buried.

Electric Guitar

High-pass at 100 Hz (it's fighting your kick and bass). Cut 200–400 Hz to remove mud. Boost 2–4 kHz for presence. For rhythm guitars in a dense mix, try a notch at 1 kHz to create space for the vocal.

Vocal

High-pass at 100–150 Hz. Sweep and cut any honky or harsh resonances. A gentle boost at 10–16 kHz (wide shelf) adds "air." Cut 300–500 Hz if the vocal sounds too close-up or suffocating. See the full vocal mixing guide for the complete chain.

Piano/Keys

Piano is one of the hardest instruments to EQ because it covers the full spectrum. High-pass at 50–80 Hz unless it's the only low-end instrument. Cut 200–400 Hz for clarity. Boost 3–5 kHz to help it cut through dense arrangements.

Always EQ in Context — Not in Solo

This is the most important EQ rule and the one most beginners break constantly. Do not solo a track and EQ it until it sounds perfect in isolation. That's not the goal. The goal is for it to work in the mix.

A bass that sounds "thin" in solo might be perfect in context — because the kick drum is filling out the low end. A vocal that sounds "too bright" in solo might disappear without that brightness in a dense mix.

EQ decisions should be made with the full mix playing at least 80% of the time. Solo a track only to identify a specific problem resonance, then go back to the full mix to judge whether your fix worked.