EQ Guide for IEMs explains practical equalizer use for audio reproduction, from beginner to experienced listeners.

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IEM EQ Guide homepage screenshot

About IEM EQ Guide

IEM EQ Guide is a long, free-standing reference on practical equalizer (EQ) use for in-ear monitors (IEMs) and audio reproduction. It is aimed at most people, from beginners to experienced listeners. It summarizes some basic theory, though it helps to already understand the hearing system, audio, and waves.

The guide is organized into seven main sections: Audio & EQ Basics, How to EQ, Case Studies, Rigs, Curves, & Targets (covering metrology and preference testing), Measurement Databases, Myths & Misconceptions, and Additional Tools. It also includes a daily changelog and an FAQ/Contact page. Sections can be read in any order. A shorter, condensed introduction is available through the Equalizer tab of squig.link databases.

Key features

  • Step-by-step EQ instructions for beginners
  • Case studies showing the EQ process in different contexts
  • Explanations of metrology and preference testing, including rigs, curves, and targets
  • Examination of relevant and popular IEM measurement databases
  • Myths and misconceptions section that examines common assumptions
  • Collection of AES papers relevant to IEMs
Best for: Listeners who want practical equalizer guidance for in-ear monitors, from beginners to experienced users willing to read a long, detailed guide.
Good for
  • Covers basics through step-by-step instructions, with theory and academic papers for advanced readers
  • Offers a shorter condensed guide through squig.link for a quick introduction
  • Sections can be read in any order, as needed
Watch out for
  • The guide is described as very long and is not meant to be an easy read
  • Requires active effort and participation from the reader
  • Assumes a general understanding of the hearing system, audio, and waves

IEM EQ Guide at a glance

Type
Website
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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IEM EQ Guide FAQ

Do I need prior knowledge to use this guide?
Some basic theory is summarized, but a general understanding of the hearing system, audio, and waves is described as useful.
Is there a shorter introduction to EQ?
Yes. A condensed guide is available through the Equalizer tab of squig.link databases, accessed with the yellow question mark button. It is described as suitable for most people looking for a quick introduction.
Where can I see changes to the guide?
A changelog records every change on a daily basis.
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