Is the preamp the “heart” of the system?

For many years my preamp was a passive devise. I was in love with the transparency. Then one day I to try an active one. With so many Stereophile “the best at any price” rave reviews I decided to go with the Audible Illusions M3B with the John Curl phono boards. I was thrilled! Finally I understood. They  sound finally had meat on the bones and a musicality that I was missing. And it was just as transparent! I guess the preamp IS the heart.