EQ Frequency Cheat Sheet

EQ Fundamentals for Music Producers

Equalization (EQ) is the most essential mixing tool. It lets you sculpt the tonal balance of individual tracks and the overall mix by boosting or cutting specific frequency ranges. Understanding where instruments and sounds live on the frequency spectrum is the first step to making better EQ decisions.

The Frequency Spectrum

Human hearing spans roughly 20 Hz to 20 kHz. Low frequencies carry the weight and warmth, midrange frequencies carry the detail and character of most instruments, and high frequencies add brightness, air, and sparkle. The spectrum is perceived logarithmically, meaning the octave between 100 Hz and 200 Hz sounds like the same "distance" as the octave between 1 kHz and 2 kHz.

Subtractive vs. Additive EQ

A core principle of professional mixing is to cut before you boost. Removing problematic frequencies (muddiness, harshness, boxiness) often yields a cleaner result than boosting what you want to hear more of. When you do boost, use gentle, wide curves. When you cut, you can be more surgical with narrower Q values.

• Subtractive EQ — Remove unwanted frequencies to clean up a sound. This creates space for other elements in the mix.
• Additive EQ — Boost desirable frequencies to enhance character. Use sparingly and with broad strokes.

High-Pass Filtering

One of the most impactful EQ moves is applying a high-pass filter (HPF) to every track that doesn't need sub-bass energy. Vocals, guitars, synths, hi-hats, and most melodic instruments benefit from rolling off everything below 60-120 Hz. This cleans up low-end mud and leaves room for your kick and bass to breathe.

Reading This Chart

The spectrum visualization above uses a logarithmic scale, which matches how we perceive pitch. Lower frequencies get more visual space because each octave in the bass range covers fewer Hertz, while each octave in the high range covers thousands. Hover anywhere to see the exact frequency, closest musical note, and which range you're in.