This is a 16 channel digital mixer in a 4U format. It comes with an external very good dual band router so no awkward drop outs. It also comes with an iPad with software ready to go on it (software is free). It comes with a 1TB HD drive so that you can multitrack record any gig, rehearsal or whatever. There is a Samson 4 way Headphone amp plumbed in (with the finest OBBM patch leads) so you can go all hard wired in-ears if you fancy being like the grown ups but without the mind bending cost of "