Walkman DD series

The Walkman DD was an early series in Sony's Walkman line of portable audio cassette players. The "DD" stood for 'disc drive', with the unit's main motor being directly coupled to the 'disc' of the capstan flywheel assembly while lying perpendicular to it within the unit. This feature was later shared with the Walkman Professional series.

Walkman DD series

The Walkman DD was an early series in Sony's Walkman line of portable audio cassette players. The "DD" stood for 'disc drive', with the unit's main motor being directly coupled to the 'disc' of the capstan flywheel assembly while lying perpendicular to it within the unit. This feature was later shared with the Walkman Professional series.