The Krossfour is a Four Input mixer based on the basic design of the Korg Entrancer - the same metal styled case is used and includes an input and some controls of the front ala the Entrancer. At 185mm (W) x 249mm (D) x 75mm (H) its about a third smaller than an Edirol V4.Some of the unique features of the Krossfour are the dj mixer styled cross fader with curve adjustment. It features Black, White, Chroma and Luma Keying between channels. Other than that its a simple 4 channel mixer with TBC on each channel.