Modern mandolinists such as Joseph Brent and Avi Avital use instruments customized, either by the luthier's choice or at the request of player. Joseph Brent's mandolin, made by Brian Dean also uses what Brent calls a false back. Brent's mandolin was the luthier's solution to Brent's request for a loud mandolin in which the wood was clearly audible, with less metallic sound from the strings. The type used by Avital is variation of the flatback, with a double top that encloses a resonating chamber, sound holes on the side, and a convex back. It is made by one manufacturer in Israel, luthier Arik Kerman. Other players of Kerman mandolins include Alon Sariel, Jacob Reuven, and Tom Cohen.