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As well as offering an unusual and stylish stand solution, these "passive amplifiers" will boost your iPhone's audio output by around 10 decibels -- not exactly room filling sound, but not bad for a planet-hugging, power-free solution.
If you think you could use some of that acoustic goodness in your iLife, then take a look through our gallery of the five best solutions available. Let us know which one blows your trumpet in the comments below.
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