That's actually a great setup. Can you still get a Powerblock? Seems they became awfully hard to find shortly after they were released. Nobody has them in stock anymore.
It really isn't at all uncommon these days to see a stage lined with Marshall stacks only to have Line6 gear hidden behind the scenes doing the real work.
I got mine when Musician's Friend did a blowout. You can still find them for around a hundred bucks on Ebay. I need to buy about five more and keep 'em in the box.