? Marantz Sa11s CD transport noise

I have a new Sa11s cd/sacd player. when playing CDs the transport is dead quiet. On SACD transport is much louder. At the beginning of the SACD You can hear the transport when there is pause in the music. As you get to the middle of the disk the transport sound is bearly noticable if you turn the volume down and put your ear close to the player. Is this normal or is there a problem with my unit. Sound on SACD is amazing, knock your socks off sound quality compared to CD