The Original Wooden Amplifier by Koostik is truly "unplugged" as it  channels the music from an iPhone through a sculptural block of rich-grained black walnut, amplifying the sound by two to four times with no need for batteries or a power cord.

The Original Koostik is the result of a year of product evolutionary design and refinement. It is our first passive solid wood acoustic amplifier for iPhone, and this now iconic design is in daily use in over 30 countries!

The Original Koostik is compatible with all versions of the iPhone. 

Please allow 2 weeks for shipping

Show More Show Less
  • October 19, 2015 - October 26, 2015
  • Final sale and no returns. View details


  1. Loading...
  2. Ferhan Hizli @saqoow

    warum so teuer aqq

  3. Onur Berk Korkmaz @makenbreak

    i like it!

  4. Oscar Doughty @puzzledmoney

    Thats the same cost as the pillows

  5. Sad Hamouti @SadHamouti

    i lik thes

Use @ to mention someone

$95 · The Original Wooden Amplifier by Koostik

Fancy 13,198
Jump to top