How to Replace Ear Cushions on Koss PRO3AA Headphones

Quick answer

Replacing the ear cushions on your Koss PRO3AA headphones takes just a few minutes. Gently pry off the old cushion from the speaker housing, align the new PRO3AA Ear Cushion over the mounting ring, and press it into place until it snaps securely.

Step-by-step replacement process

1. Remove the old cushion: Hold the headphone firmly in one hand. With the other hand, pinch the edge of the old cushion near the speaker housing and pull it outward gently. The cushion is held by a flexible lip that stretches over a plastic ring. Work your way around until the cushion pops off. Common mistake: pulling too hard in one spot can tear the old cushion, leaving debris on the mounting ring. Remove any leftover foam or plastic bits before installing the new pad.
2. Inspect the mounting ring: Check the plastic ring on the headphone housing for cracks, warping, or leftover adhesive. A damaged ring may not hold the new cushion securely. If the ring is intact, wipe it clean with a dry cloth. If the mounting ring is broken, you may need to contact Koss support for a housing replacement before installing new cushions.
3. Install the new PRO3AA ear cushion: Take one new PRO3AA Ear Cushion and locate the groove on its inner edge. Align that groove with the mounting ring on the headphone housing. Starting at the top, press the cushion lip over the ring, then work your way down and around. You should hear a soft snap or feel the lip seat fully into place. Checkpoint: run your finger along the entire seam to confirm the cushion is evenly seated. A partially seated cushion will cause sound leakage and discomfort.
4. Repeat for the other earcup: Follow the same removal and installation steps for the second earcup. Use the second cushion from the pair. Mixing old and new cushions can cause uneven pressure on your ears and alter stereo imaging. Always replace both sides at the same time.
5. Test the fit and sound: Put on the headphones and adjust the headband. The cushions should sit evenly around your ears without gaps. Play a familiar track and listen for consistent bass and clarity. If the sound seems thin or you feel air leaks, recheck the cushion seating. If the new cushions still feel loose after re-seating, the mounting ring may be worn. Consider replacing the headphones if the housing is damaged beyond repair.

Product used in this guide

• PRO3AA Ear Cushion: The Koss PRO3AA Ear Cushion is a replacement ear cushion accessory for Koss stereophones. This item includes one pair of ear cushions, giving you a left and right cushion for your headphones. Buying a single pair gives you everything needed to restore both earpads, saving you from ordering two separate items.