[stringbound]

I had the whole system, stick, sub, expander and trolley. Best system ever, but a bit hard to transport with public transportation. Having developed a sore back I had to sell the system. Back on topic. You don't need these in a normal situation. I've been using it once, at an open air. Since that the SUB stood in a corner, collecting dust. The EXPAND is a great tool, when you need more channels than the two of the SA330x. I needed 3 channels, before the Tonedexter hit the market, that's why I got the SA330x system. Being able to switch the reverb on/off is a big plus. I regret that I had to sell the System, due to my back. A very good and thought through system, but if you don't have a bass player, you won't need the SUB.