The Roland TD-17 V-Drums Sound Module is the heart and soul to some of the most popular Roland electronic drum kits. It Features an expanded variety of sounds and boasts Rolands Prismatic Sound Modeling Engine accurately reproducing the character and tone of acoustic drums in the same way the TD-50 module does with lighting fast response times. The TD-17 module is packed with 50 preset drum kits 310 different instrument sounds and the ability to add another 50 custom or imported kits the TD-17 Module allows for complete creativity with a level of quality thats completely unique to this price point. The module is armed with an array of built-in coaching functions that track your technique measure your progress and increase your motivation. The module is also equipped with Bluetooth connectivity to enable you to stream audio directly from your device while the SD card slot allows you to easily import samples to completely customise your drum kit.