A firm called digiZoid rolls out the ZO personal/portable subwoofer. The ZO features the SmartVector technology, a sound contouring system that “delivers optimum sound reproduction from any speaker with matched acoustic response to the human ear”.
This personal subwoofer has enables you to select from 32 sound balancing profiles (contours) and has a LightScale indicator providing a visual representation of SVC contour profile. The ZO comes with built-in rechargeable lithium-polymer battery that lasts for up to 12 hours. It uses 3.5mm jack for input making it compatible with most gadgets, including MP3 player, PMP, iPhone/iPod, cellphone..etc.
The digiZoid ZO is priced at $99.