They have shiny finish and new martial techniques that make these cymbals have the sound of A Zildjian, but with a contemporary touch. The A Customs are not too dark or too bright. They have a quick response and a clean attack.
A sophisticated expression of classic Avedis Zildjian sounds. They have lighter weights and a radically innovative hammering. Developed next to the Vinnie Colaiuta drum icon in 1992, this series uses a hammering of fine grooves that will allow you to add the classic Zildjian sound to the most current music. This series is specially designed and manufactured for today's music. Stunningly versatile.

Alloy

Known as Zildjian Secret Alloy, this B20 alloy is composed of 80% copper and a  20% tin. This B20 alloy can be difficult to work, as it requires a great reworking and recollected due to its very fragile natural state, but Zildjian has used it for more than 400 years.
Like all cymbals of Zildjian cast bronze, they are poured and moulded individually from raw cast metal. Each foundry cools and is classified by weight for each model cymbal. Then, the casting parts are subjected to a complex sequence of heating techniques, laminated, formed, martilleated and tornado unique for each model cymbals. These cymbals cast bronze have a rich and large body sound that improves with the passing of time. They also have greater projection, clarity and durability than any other cymbal. 

About Zildjian

Zildjian is certainly a mythical brand in manufacturing cymbals and they've been doing it since 1623.
Your cymbals are on the most important tours of the world from jazz to metal as well as in the best orchestras in the world and of course in thousands of mythical recordings.
The cymbals Zildjian has a secret and ancestral alloy combined with his secret alloy and the best “handmakers” make these cymbals authentic jewels.

Drummers like Dennis Chambers, Steve Gadd, Charlie Watts, or Taylor Hawkins from an endless list, trust their tours and recordings to Zildjian