they actually work quite well and they have a battery built in! Which we've tested over 6 hours at 60% volume, comes with good quaity mic, ipod dock, 3 line-ins and one line out....
just charge up, drop your ipod in and strap to your trailer....oh yes, they're pretty sturdy too.
Rollapaluza have got two of these:
http://www.jbsmusic.co.uk/view/2221/
they actually work quite well and they have a battery built in! Which we've tested over 6 hours at 60% volume, comes with good quaity mic, ipod dock, 3 line-ins and one line out....
just charge up, drop your ipod in and strap to your trailer....oh yes, they're pretty sturdy too.