Wooden Amplifier

Koostik from Englewood, CO
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At home, on the beach or in the woods, you can use this solid wood dock anywhere you go. It amplifies the iPhone’s built-in speaker using hand-cut acoustic chambers, boosting your device’s volume up to four times—all without using electricity. A single craftsman meticulously makes each piece by hand.

More Details

Handmade in the United States by a single craftsman. Compatible with all version of the iPhone. Available in Walnut, Hard Maple and Cherry Wood. Passive iPhone amplifier in solid wood. Achieves up to 4 times amplification through natural acoustics using 2 hemispherical sound chambers. No power needed. Dimensions: 8.5 x 3.5 x 2 inches/21.6 x 9 x 5 centimeters. 

Compatible with iPhone 5/5s only.

  • Product Code: V20002841

Shipping & Returns

  • This item ships directly from Koostik in Englewood, CO
  • Item is ready to ship in 4 Business Day(s). Delivery date will vary depending on your shipping address.
  • International orders may experience possible delays and take longer to arrive.
  • We accept complimentary returns within 30 days of receipt if the item is unused and in original condition.
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