A video/audio reproduction device that adjusts a common parameter associated with a plurality of individual parameters to adjust image quality and sound quality includes: a parameter output unit that accepts an input of the common parameter and outputs a first individual parameter and a second individual parameter that are associated with the common parameter inputted, among the plurality of individual parameters; an image quality adjustment unit that adjusts the image quality in accordance with the first individual parameter outputted; and a sound quality adjustment unit that adjusts the sound quality in accordance with the second individual parameter outputted, wherein the first individual parameter is at least one image quality adjustment parameter that changes in response to changes in the common parameter, and the second individual parameter is at least one sound quality adjustment parameter that changes in response to changes in the common parameter.