- Sep 25, 2013
It seem that CAL 2 uses the same Foster 33917 driver (http://www.head-fi.org/t/694472/lightbox/post/10052487/id/991973) as used in original CAL.
So I don't see a point of paying almost double the price for CAL2.
the driver is the same...so ? the driver is not the sole determining factor when it comes to sound, Look at Audio Technica's. A700x has the same driver as the A900x, but does that mean they sound the same ? read the reviews....also check HD558 vs HD598, same driver, different cup design == different sound....