An audio signal output device comprising: an audio signal output portion configured to output an audio signal of content reproduced in an external device outputting audio; and a volume setting information acquisition portion configured to acquire volume setting information of the external device; characterized by a rewritable volatile semiconductor memory configured to store the content of the audio signal; and a control portion configured to acquire volume information of the content temporarily stored in the memory, wherein the control portion is configured to determine an output volume of the external device on the basis of both of the volume information of the audio signal of the content stored in the memory and the volume setting information of the external device when the content is reproduced and perform control of lowering the output volume of the external device in a case where the output volume is higher than a prescribed volume threshold, determine whether or not the audio signal of the content is output without conversion from the audio signal output portion to the external device in the case where the output volume is higher than the prescribed volume threshold, perform control of lowering the output volume of the external device by lowering the volume setting information of the external device in a case where the audio signal of the content is output without conversion of the audio signal format, and perform control of lowering the volume information of the content in a case where the audio signal of the content is output with conversion of the audio signal format. an audio signal output portion configured to output an audio signal of content reproduced in an external device outputting audio; and a volume setting information acquisition portion configured to acquire volume setting information of the external device; characterized by a rewritable volatile semiconductor memory configured to store the content of the audio signal; and a control portion configured to acquire volume information of the content temporarily stored in the memory, wherein the control portion is configured to determine an output volume of the external device on the basis of both of the volume information of the audio signal of the content stored in the memory and the volume setting information of the external device when the content is reproduced and perform control of lowering the output volume of the external device in a case where the output volume is higher than a prescribed volume threshold, determine whether or not the audio signal of the content is output without conversion from the audio signal output portion to the external device in the case where the output volume is higher than the prescribed volume threshold, perform control of lowering the output volume of the external device by lowering the volume setting information of the external device in a case where the audio signal of the content is output without conversion of the audio signal format, and perform control of lowering the volume information of the content in a case where the audio signal of the content is output with conversion of the audio signal format. determine an output volume of the external device on the basis of both of the volume information of the audio signal of the content stored in the memory and the volume setting information of the external device when the content is reproduced and perform control of lowering the output volume of the external device in a case where the output volume is higher than a prescribed volume threshold, determine whether or not the audio signal of the content is output without conversion from the audio signal output portion to the external device in the case where the output volume is higher than the prescribed volume threshold, perform control of lowering the output volume of the external device by lowering the volume setting information of the external device in a case where the audio signal of the content is output without conversion of the audio signal format, and perform control of lowering the volume information of the content in a case where the audio signal of the content is output with conversion of the audio signal format.