Seymour Duncan Zephyr™ Silver Pickups have really high tone more responsive to touch.
It has 4 features which makes it one of the best pick ups and humbuckers one could buy!!
As we all know silver is a good conductor. This helps in giving a dense sound and a as mentioned before amazingly high tone.
-Nickel and Stainless Steel Bi-Metallic pole pieces
They help in focusing the guitars magnetic field which gets disturbed by the vibration of the strings.
-Glass Fibrefill Nylon Bobbin
The above two help in giving clarity and definition to your sound. The cryogeni treatment is basically supercooling to help in getting better definition to your sound."Cryo treatment enhances string definition and boosts the "way huge" potential of your guitar".