Cambridge Sound Works builds some pretty incredible powered multimedia speaker systems.

The Soundworks system has a small subwoofer and two little satellites which are surprisingly good.
Cambridge Soundworks also sells a nylon case which will turn the system into a portable. It has
room for a CD Walkman type device and a pocket for a battery. (The Soundworks system can
operate off of 12 volts.)

Cost of the Soundworks system is $100 US.

They also sell two other systems which might work well, the much smaller PCWorks at $50 US and
the MicroWorks at about $250. The Microworks sounds awesome, but the subwoofer is a bit big to
be portable.

Since all of these have 12 VDC power inputs, it wouldn't be difficult to kludge together a portable
stereo which would be well above the quality normally found in such things.

Cambridge Soundworks web site is at: http://www.hifi.com/

Just a thought to those wanting to use their Empegs when they are out and about.