Best piece of kit I ever bought .. hands down. I wasted over £10,000 in the 90s on different guitars and amps. What I was looking for then was this!http://hoovi.at/deeflexx-2/what-is-deeflexx/?lang=en
I stopped taking an extra cab to gigs and stuck to a single (Hotrod Deluxe), placed on the floor right behind me. You can see it in action with me here.https://www.youtube.com/watch?v=l7tjVaCo6uI
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Not cheap, but the price should come down when these things catch on. Everyone I've lent mine to bought one, except one friend, whose wife wouldn't let him!