I can give you some info on DJ Mixers, turntables and DJ CD players if you come to that stage, but not on amps. Sorry.

I always connected my stuff at home to a regular amp (that was already sufficient for the neighbours), and when I went out DJ'ing, it was usually in a club or at an organised party so I didn't have to care about that.

The only thing I always took with me were my Ortofon Concorde turntable cartridges. No other cartridge has ever touched my records!