Evans EMAD '56 Calftone Drum Heads look, sound, and feel like natural calfskin, but they've got the modern benefits of manufacturing consistency, fit, and tuning range thanks to the 360 Technology design. And they won't become floppy under humid conditions!
This 22" bass drum head is made from a single ply of 12-mil Mylar blended with "secret ingredients" to produce the rich, vintage tone of calfskin.
The Externally Mounted Adjustable Damping system - or EMAD - boosts attack while shortening sustain, much like a pillow. This added punchiness could be nice for drummers who like the sound of Calftone but want more a more articulate bass.
Jazz, funk, rockabilly, classic country, and any other genre that prizes richness of sound over volume and punch will benefit from Calftone, but if durability under heavy playing is a key factor you may want to look for a different model.