Guys, I'm a newbie when it comes to analog and would like some clarification as to how they work. So is the cartridge the equivalent to an outboard DAC for a CD player? And on reviews I've read it seems as though the tone arm makes a musical difference? I don't see how this would be. If the cartridge is what makes the difference in sound would I be best off to get a cheap unit and buy a better quality cartridge? My local dealer can hook me up with the Rega's or NAD(which is made by Rega) players for a good price.