DIY Build-a-Boombox Cardboard Smartphone Amplifier

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  • DIY Boombox Amplifier works with most smartphones
  • Great amplification - sweet sound!
  • No batteries or wires required
  • Super cool retro boombox design

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$7.99 Standard shipping 3-8 Business Days
$16.99 Express shipping 1-2 Business Days



Do you fancy yourself as a wannabe Beastie Boy? Love busting a move to your favourite Spotify playlists but need a little more boom boom BOOM?

It’s time to build your own piece of 1980s hip hop culture and blast your friends away with our DIY Build-a-Boombox Retro Smartphone Amplifier.

All you need is a pair of hands and your smartphone. The straightforward instructions make it super simple to assemble, and the clever design and smart acoustics give you fantastic amplification: loud, clear sound.

In no time you’ll be cranking the tunes and busting the moves, and if your friends want to borrow it? CAN'T TOUCH THIS!


  • No batteries or wires required – everything you need is inside the box (minus the phone, of course!)
  • Works with most smartphones where the speaker is located at the base of the phone
  • The clever design and smart acoustics means you get fantastic sound!
  • A great gift for kids


  • Avoid contact with wet/damp surfaces
  • Maximum phone width 7.4 cms
  • Made from cardboard - speaker & packaging is 100% recyclable

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Shipping & Returns

►  Standard Shipping (3-8 Business Days):
for orders over $99.
$7.99 Flat Rate for orders less than $99. 

►  Express Shipping (1-2 Business Days):
$16.99 Flat Rate.


►  Same Day Delivery within Melbourne Metro
$19.99 Flat Rate.

►  Same Day Dispatch
Orders placed before 2pm AEST on a business day are dispatched the same day.

►  100 Days Money Back Guarantee
Return any product within 100 days in its original packaging for a refund.

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