The paper deals with the robust output feedback discrete control of continuous-time multi input multi output (MIMO) linear plants with arbitrary relative degree under parametric uncertainties and external bounded disturbances with quantized output signal. The parallel reference model (auxiliary loop) to the plant is used for extracting information about the uncertainties acting on the plant. The proposed algorithm guarantees that the output of the plant tracks the reference output with the required accuracy. (C) 2015 Elsevier Ltd. All rights reserved.