It's all about how it was recorded, (equipment and setup), who's recording it, (they sound good, don't they) and mastering. Every producer/sound engineer is going to be different, and that's what makes their sound. But all of them will point to my first sentence. FInd out who you wish to sound like, find the studio and engineer that did the recording, CALL THEM, and ask some questions. You'd be surprised how many people will take the time to answer your questions.
Good luck, and don't give up. It takes years to get really good at sound engineering.