“KOOSTIK is the natural alternative to electronically amplified iPhone sound docks. Using only the iPhone’s built in speaker, it acoustically amplifies the volume output by 2 to 4 times!
KOOSTIK is not intended as a replacement to electronic amplifiers in all situations. If you’re into Heavy Metal at high volume or heavy sub base sounds, KOOSTIK may not be your cup of tea. But if you like intimate vocals and instrumentals in relaxed settings, KOOSTIK will blow you away (gently of course).”