Details: The classic original Beatles studio albums have been re-mastered by a dedicated team of engineers at Abbey Road Studios in London over a four year period utilizing state of the art recording technology alongside vintage studio equipment, carefully maintaining the authenticity and integrity of the original analogue recordings. The result of this painstaking process is the highest fidelity The Beatles catalogue has seen since it's original release. Within each CD's new packaging, booklets include detailed historical notes along with informative recording notes.