| 摘要 |
A magnetic recording and reproduction apparatus includes a rotary drum to be driven to rotate, a first head (R1) provided on the rotary drum, a second head (R2) provided on the rotary drum so as to be set in an enable state when the first head (R1) is in a disable state, first and second amplifying circuits (3a, 3b) connected to the first and second heads (R1, R2), respectively, and being set in an enable or disable state by a selection signal, a rotary transformer (6a) commonly coupled to the first and second amplifying circuits (3a, 3b), and a selection signal generating portion for supplying a selection signal to the first and second amplifying circuits (3a, 3b) in synchronism with rotation of the rotary drum.
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