View Cart (0)
Amplify your iPhone’s audio anywhere with the Koostik Original. The passive solid wood acoustic amplifier allows you to increase the volume of your iPhone 2-4 times without the need to plug anything in. Available in Walnut or Hard Maple, the Koostik Original is as beautiful as it is useful.
- Made in the USA
- Compatible with all iPhones
- Available in Walnut or Hard Maple