There used to be an annual hi-fi and TV exhibition at the RAI Amsterdam called FIRATO. It gradually died out as organisers realized that going to see pop stars dancing on stages next to gadgets didn't sell any more gadgets. The acoustics in the vast halls bear no resemblance to what it sounded like at home. When we visited in 1982, the show was already passed its peak. I was always surprised that a new shortwave radio was often shown there, though seldom on the market until months after. Back then DAT was the big story. In 2015, the only show in Europe left is IFA in Berlin, but I seriously wonder for how much longer.