Check out this passive acoustic amplifier block for the iPhone 4 from Chicagoland Etsy user Lowell.

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Adam Flaherty

Adam Flaherty

I make cool stuff and write about other people making cool stuff on If you have something you think I should see, send me a tip.

  • Anonymous

    This Maker does understand that there are not “speakers” on the bottom of the iPhone – but actually a “speaker”? ┬áThe other side is a mic.