Well, no, Morph 4 isn’t really a matrix—you’ve got four inputs, but you don’t have the orthogonal outputs; instead you’ve got a few different mixes: A+B, C+D, A+B+C+D (unity) and A+B+C+D (averaged). The official functions list is:
voltage controlled mixer
dual crossfader
dual panner
interpolating scanner
interpolating distributor
quad VCA
quadraphonic controller
slope modifier
rectifier
complex waveshaper
… or something in between any of those