Sony MZ-R55 Top, Main Controls

Device ClassPortable (Walkman) Recorder
ReleasedOctober 1998
Price (launch)¥46,000 (~$350 USD at 1998 exchange)
InputsDigital optical (3.5mm)
3.5mm stereo line in
3.5mm Line-In / Optical
Outputs3.5mm (with remote)
Line Out / Headphones
PowerDC 3V (center positive)
1x NiMH NH-14WM(A) gumstick battery
2x LR6/AA battery (with EBP-MZR55 case)
ATRAC versionATRAC 4 (IC: CXD2652AR)
Dimensions78.9 x 18.9 x 84 mm
3⅛“ × ¾” × 3⅜“
Weight147g (5.2 oz), (190g (6.7 oz) w/disc and NH-14WM rechargeable)

Features: ATRAC 4 (IC: CXD2652AR). Unit is small, 75% the volume of the MZ-R50. 40 sec shock memory, backlit remote “stick controller” with 9 character display (vs. 6 in previous versions).

Operation, editing and track labeling functions available on remote as well as main body. Titling may be done while recording is in progress. Clamshell opens via pushbutton (rather than slider). Two step bass boost. Selectable microphone sensitivity (HIGH/LOW). First recorder with 1.2V drive. Uses NiMH gumstick rechargeable battery (NH-14WM(A)). Available in gold, blue, yellow.

Sony announces the upcoming release of a USB to MiniDisc connection kit that will be bundled with the MZ-R55.

Parts: MD-Mechanism Type: MT-MZR55-161, Optical Pick-up Type: KMS-280A

Mis-features: Contrary to what is stated in the manual, the battery cannot be recharged while the unit is in use. When the unit is in the ``stopped'' state, pressing the stop button will start the battery charging. In manual recording level mode, unit must be paused to change the level setting (as with all Sony portables).

Notes: The MZ-R55's remote can be used with the MZ-R50, but in this case the backlight is inoperative (only the MZ-R55 emits the command codes needed to control the backlight). The MZ-R55 remote is completely interchangeable with the MZ-R37 remote. -Gerald Tomyn

Tips: Take special care to close the rechargeable battery compartment hatch carefully and completely; the plastic tabs at the corners have been known to break when they are not grasped completely by the metal hook edge inside the player.

Problems: Hoshing Kwong describes a circuit board fix for the Sony MZ-R55 self recording-start problem.

Content adapted from: MZ-R55

Additional Photos

Sony MZ-R55 Rear/Bottom

Sony MZ-R55 Left

Sony MZ-R55 Front

Sony MZ-R55 Right


  • equipment/sony/portable/mz-r55
  • Last modified: 4 months ago
  • by jtd121