I just saw an ad for the new GK "200W, 2lb" amplifier. It looks as if it occupies half a 1u rack space, I think? Back in 1987, I had a car phone that size. Just the portable handset, that is. It worked within the range of maybe 100 yards from the transceiver fitted in the car, which was about the same dimensions. Nowadays, the function of both of those - and hugely more - is done by a cell phone (which is an mp3 player, camera, video camera and player, satnav unit, webcam, personal organiser, internet capable et cetera, hand held computer). In twenty years, will we have bass amp heads, capable of 200W or more output, that will fit in your pocket like your cell phone does? I'm thinking we probably will, or maybe something else equally amazing, compared to what we have now. Cool. What would you like?