Passive Horn Speaker Amp, Compatible with iPhone

Design preview. Rendered from the file, not a photo.

The maker says it fits: iPhone. See the proof

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What it does

Passive horn design boosts sound so you get more volume with no batteries
No electronics or cords so setup stays simple
Shaped to fit iPhone so you can check compatibility before you order
Made to order in the USA after you order

Movie night gets louder without extra gear. This horn speaker amp is shaped to boost sound from your iPhone using nothing but its shape.

It works as a passive acoustic amplifier. There are no batteries, no wires, and no electronics inside. You just set your phone in place and the horn shape does the rest.

It is compatible with iPhone. Check the fit before you order so you know it matches your phone.

Not affiliated with, endorsed by, or sponsored by iPhone. iPhone and its product names are trademarks of their respective owners.

10.0k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: iPhone

That is the maker's word, not a fit we measured. Check the size below against your own.

iPhoneFrom the maker's own listing title, checked 2026-08-13. See the original post

Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.

What you get

This design prints as one piece.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.