A rotary magnetic head apparatus for use in a VTR and producing a low level of vibration by restraining the unbalance of an overall rotary body of the magnetic head apparatus. The apparatus includes a fixed cylinder for supporting a rotary shaft via bearings, a rotary cylinder secured to one end of the rotary shaft and having magnetic heads, and a motor rotor directly coupled with the other end of the rotary shaft. At least one first balancer and at least one second balancer are respectively provided in the rotary cylinder and the rotor so as to compensate for the unbalance of the rotary body composed of the rotary cylinder, the rotary shaft, and the rotor.