To provide a multitrack recorder and a synchronous recording method that are capable of exchanging a clock and a control message in synchronous recording using two multitrack recorders only by connecting one signal line thereto.

The multitrack recorder capable of performing synchronous recording between the two multitrack recorders (a master side MTR 10 and a slave side MTR 20) by transmitting and receiving the packetized control message by USB communication corresponding to a bidirectional serial communication scheme includes: an SOF packet detection unit 14, 24 for detecting an SOF packet included in one of transmission data and reception data at predetermined periods; and an audio clock generating unit 16, 26 for generating an audio clock that is synchronized with the SOF packet detected by the SOF packet detection unit 14, 24, and for output of the audio clock to a control unit for controlling an operation of the multitrack recorder.

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