Tambourines are available with natural skin or optional plastic head (in most cases). Natural skins have a warmer timbre than the somewhat dry sound of plastic heads. These however, have the advantage of constant pitch. They do not react hygroscopially and need not to be retuned after changes in temperature or humidity. All tambourines (with the exception of RST 250/10 with nailed head) from STUDIO 49 are tuneable and 100 % made in Germany.