ED1TC On-Ear Headphones: How to Get a Comfortable Fit

By Koss Stereophones | Published: 2026-10-31

Category: How-to Guides

Learn how to adjust your ED1TC headphones for a secure, comfortable fit. Follow these steps to reduce pressure and improve sound.

Quick answer

To get a comfortable fit with ED1TC headphones, extend the headband evenly on both sides, center the ear cups over your ears, and adjust until the cups seal gently without pressing. Small tweaks to headband length and cup position make the biggest difference.

Why the ED1TC fit feels different from other on-ear models

The ED1TC uses a plastic ear cup designed for easy cleaning and durability in shared environments. That same solid material creates a seal by gently pressing around the ear, which can feel firmer than foam-cushioned headphones at first. Understanding this helps you adjust for comfort without expecting a soft, pillow-like feel.

When to accept a firmer fit and when to adjust

A slight clamping force is normal and helps reduce ambient noise. However, if you feel pressure points after 15 minutes or the cups leave red marks, revisit the steps below. The goal is a secure seal, not tightness.

Step-by-step fit adjustment for ED1TC headphones

Extend the headband evenly: Hold the headband and pull both sides out equally until the ear cups sit comfortably over your ears. Avoid extending one side more than the other. Check that the headband looks symmetrical; uneven extension causes the cups to tilt and press unevenly.
Position the ear cups correctly: Place the cups so they cover your ears entirely, with the cushion resting around the ear rather than on it. The headband should sit centered on top of your head. If the cups feel loose, shorten the headband slightly; if they press too hard, lengthen it one notch at a time.
Adjust for glasses or hair: If you wear glasses, lift the arms slightly so they rest under the cup cushion, not trapped between the cup and your head. For thick hair, you may need to extend the headband a bit more. Glasses arms should not create a pressure point; adjust the cup angle if needed.
Test the seal and pressure: Put the headphones on and play music at a low volume. Gently press the cups closer to your ears; if the bass increases noticeably, you need a better seal. If pressing causes pain, the fit is too tight. A good seal should feel snug but not painful; readjust the headband length if needed.
Take breaks and recheck: Wear the headphones for 15–20 minutes, then remove them and check for red marks or discomfort. If present, lengthen the headband by one notch and try again. Minor pressure is normal initially, but persistent pain means the fit is too tight.

Product facts

ED1TC: Plastic ear cup creates a seal and vacuum to reduce ambient noise interference and leakage. A proper seal improves sound clarity, so adjust the cups to maintain gentle contact without excessive pressure.
ED1TC