I have the dynamis system.. it shows a short circuit error. my track is clear.. only happens when i have all 10 engines on the track. when i have half of them it works fine.. is it  a power issue? would the power booster thing solve it.. should i bring the unit in to be checked out.. I would of thought that the unit could easily handle 10 engines... any ideas???

i need a good, cheap, easy to use controller... it has to be able to control / adjust the volume levels on the trains as well... any suggestions?

I have just purchases the accela ho train set with dcc on board... i want to put sound into this unit ... what exactly do i need? and how problematic is it??? all i need is amdel # of what to buy and that would be helpful