iPod case maker iFrogz recently unveiled a new, very portable mini-speaker system which an expandable middle chamber. The new Thumpz is priced at around $25.

The iFrogz Thumpz offers up what its maker calls a typical small speaker sound when the speaker is closed. When the middle section is expanded however one gets increased bass sound, filling a room with “a deep rich sound.” It comes with a rechargeable battery and USB cable.

The Thumpz is designed to work with any digital media player including iPods. It is available now.

iFrogz Thumpz