This is the Roland TR-8 in the B Studio which encompasses the TR-808, modified 808, and the TR-909 sounds. Recently released the drum machine has added on expansion packs which will be downloaded for additional sounds from other great drum machine modules. One of the best features of this unit happens to be that we mounted in B Studio on a Middle Atlantic drawer to slide in and out for use and also secured it to the drawer using velcro allowing the unit to be also used in C Studio or A.
