Den kanadensiska Phonofonics II ($835) säga kunna klämma 55 dB ur din iPod utan någon extern kraftkälla. Så här förklarar men tekniken:

Through passive amplification alone, These unique pieces instantly transform any personal music player + earbuds into a sculptural audio console.

Without the use of external power or batteries, the Phonofone inventively exploits the virtues of horn acoustics to boost the audio output of standard earphones to up to 55 decibles* (or roughly the maximum volume of laptop speakers).

Upon connecting active earphones to the Phonofone their trebly buzzing is instantly and profoundly transformed into a warm, rich and resonant sound.

Högtalaren Phonofonics II kommer endast att tillverkas i en begränsad upplaga på 250 exemplar. (Newlaunches via Gizmodo)

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