Matrix switcher apparatus

The matrix switcher apparatus adapted to arbitrarily distribute inputs (T) of a plurality of channels to outputs (S) of a plurality of channels has therein a cross point matrix adapted for connecting one matrix switcher unit to any other matrix switcher unit or units to carry out expansion of input/output, and that input and output terminals expandable up to a predetermined maximum number of channels can be provided in the matrix switcher apparatus. Further, the matrix switcher comprises a cross point matrix (31) including input terminals (T) of a plurality of channels, and output terminals (S) of at least partial channels of the plurality of channels and channels expandable (Q) to any other unit (12,13,...) or units; and a cross point matrix (32) including input terminals of partial channels and channels expandable to any other unit or units, and output terminals of partial channels of the apparatus, thereby making it possible to constitute the system on a compact scale or various scales, and to reduce the cost.