Sony MZ-RH10 / MZ-M100

Source: MiniDisc Wiki contributors · September 3, 2026 snapshot · CC BY 4.0, except where otherwise credited.

Attribution and changes

Adapted from “Sony MZ-RH10 / MZ-M100”. Links, layout and file names normalized; missing database fields restored; remote embeds replaced with links. Manufacturer manuals and separately credited photographs retain their original attribution.

Name	MZ-RH10 / MZ-M100
Manufacturer	Sony
Released	2005/04
Device type	portable
Recorder	Recorder
MDLP	Yes
NetMD	Yes
Hi-MD	Yes
Radio	No
Dimensions	80.2 x 18.9 x 84.1 mm
Weight	120g (147g with battery)
ATRAC ver	Hi-MD
Battery	Not recorded "Gumstick"
Battery notes	Not recorded
Sidecar (depr)	1xAA
Voltage	3
Power cable	Center positive
Price (launch)	$300
Price (launch)	¥35 000
-
Inputs	3.5mm line in (analog-only), 3.5mm line in (optical multi), 3.5mm microphone
Outputs	3.5mm line out (analog-only), 3.5mm headphone
Control	Remote (Sony), USB Mini-B

The MZ-RH10 is a Hi-MD Walkman offered in black, silver, blue and orange. Black models feature black transport buttons and jog wheel, while other colors feature silver transport buttons and jog wheel. All models feature a silver accent on the edge and battery door.

Its sister model, the MZ-M100, was sold as a field recorder (packaged with Sony's ECM-DS70P stereo microphone) and boasting Macintosh support for Linear PCM uploading. The MZ-M100 features black transport buttons, jog wheel, and a black accent on the edge and battery door.

The two models are otherwise largely identical other than their external appearance and included items. They both share a large OLED display and support for running off an external AA battery for power (with the included EBP-RH10 battery case).

Both models appear to have been released worldwide. However, mainly Japanese examples have appeared for sale recently on the Internet. The Japanese/Asian models include support for a charging dock and a RM-MC35ELK remote.

Note: The original OLED screen is known to go bad rather quickly. I haven't seen any with a functioning screen in a few years. However, in 2025 a new MZ-RH10 display module has been developed by the MD Community : https://lectronz.com/products/rh10-oled-module. It can still be used with a remote, though some settings may be difficult to change.
ATRAC IC: CXD2681

Content adapted from:
Minidisc.org Sony MZ-M100/RH10
av.watch
SonyStyle
SonyStyle (MiniDisc Wiki mirror)
MDCon's Sony MZ-RH10 Review by Asivery

Disassembly tips

There are two hidden screws behind the battery cover and another one under the eject slider that need to be removed when opening the unit up as well as the more obvious ones.
There is a cover/slider that can be moved to cover either the micro USB port or DC jack on the side. Removing the casing is easier with the slider covering the DC jack and exposing the USB port. This is probably the most delicate part of the rear casing.
The rear casing is easily cracked if not removed carefully. With the screws and battery cover removed, start easing it off around the battery cover, where the eject button is and then where the contacts for the battery caddy and USB port reside. Once those 3 sides are free, unhook it from over the headphone/remote, line in and mic jacks.