Abstract: A tape duplicator having component parts capable of duplicating magnetic tape in cassette form or reel form to cassette form or reel form interchangeably without special units, having the same capstan drive to drive both the cassette and the reel tapes interchangeably, and provided with an automatic volume control which is fully compensated to adjust the volume level to the set level and which avoids excessive high volume levels in beginning recording and high noise levels during silent spots in the tapes.