Short answer
Reach over your head and pull the top of your ear up and back to straighten the canal. Insert the IEM with a slight twist so the tip slides in and the shell sits in the bowl of your ear. Let go of the ear; it closes around the tip. For over-ear designs, run the cable over the top of your ear. Full bass and quiet surroundings mean you have a seal.
Step by step
Check left and right
Find the L and R marks on the shells or the cable. Over-ear cables usually have pre-shaped ear guides that only fit one way.
Pull your ear up and back
Reach over your head with the opposite hand and gently pull the top of your ear up and back. This straightens the ear canal.
Insert with a slight twist
Push the tip into the canal while rotating the IEM a little, so the shell settles into the bowl of your ear.
Let go of your ear
Release the ear. The canal closes around the tip and holds it.
Route the cable
For over-ear designs, loop the cable over the top of the ear and slide the chin slider up to take weight off the IEMs.
Check the seal
Play music with steady bass. It should sound full and outside noise should drop. If not, reinsert or try another tip size.
Troubleshooting
Common fit problems
| Problem | Likely cause | Fix |
|---|---|---|
| Thin bass, tinny sound | No seal | Larger tip, deeper insert, or foam tips |
| Bass comes and goes | Tip slips when you move your jaw | Larger tip or foam; cable over the ear |
| Pressure or ache | Tip too big or pushed too deep | Smaller tip, shallower insert |
| Thumping when you walk | Cable noise travelling up the wire | Over-ear routing and the chin slider |
| One side louder | Uneven seal | Different tip size on that ear |
| Muffled sound over time | Wax on the nozzle filter | Clean the nozzle with a soft brush |
Care between uses
- Wipe the shells and tips after use.
- Brush the nozzle to keep wax out of the filter. IEM cleaning tools.
- Store them in a case so cables do not kink. IEM cases.
- Unplug by the connector, never by pulling the cable, especially with 2-pin sockets. 2-pin vs MMCX.
Still no seal? The tip is the usual culprit: see how to choose ear tips.
Questions people ask
Why do my IEMs keep falling out?
Usually the tip is too small, the IEM is not inserted deep enough, or the cable is pulling it out. Try a larger tip, use the ear pull when inserting, and route the cable over your ear with the slider pushed up under your chin.
Which way does the cable go?
Many IEMs are designed for over-ear wear: the cable leaves the top of the shell and loops over the ear. Check the L and R marks and the shape of the cable ear guides. Straight-down designs hang from the bottom.
How deep should IEMs go?
Deep enough that the tip seals the canal and the shell rests in the bowl of your ear. Never force it. If it hurts, use a smaller tip or a shallower insert.
How do I take IEMs out safely?
Hold the shell, not the cable, and twist gently as you pull out. Breaking the seal slowly avoids a pressure pop on the eardrum.
Sources
Last reviewed October 12, 2026. Models, versions and listings change; check the product details before you buy, and keep the volume sensible.