Source: MiniDisc Wiki contributors · September 3, 2026 snapshot · CC BY 4.0, except where otherwise credited.
Attribution and changes
Adapted from “Panasonic SJ-MR100”. 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 | SJ-MR100 |
|---|---|
| Manufacturer | Panasonic |
| Released | 1999/06 |
| Device type | portable |
| Recorder | Recorder |
| MDLP | No |
| NetMD | No |
| Hi-MD | No |
| Radio | No |
| Dimensions | 84x77x18.9mm |
| Weight | 136g body only (161g w/batt) |
| ATRAC ver | Panasonic H.D.E.S |
| Battery | Not recorded Not recorded |
| Battery notes | Not recorded |
| Sidecar (depr) | Not recorded |
| Voltage | 1.8 |
| Power cable | Not recorded |
| Price (launch) | Not recorded |
| ¥46 000 | |
| - | |
| Inputs | 3.5mm line in (optical multi), 3.5mm microphone |
| Outputs | 3.5mm headphone |
| Control | Not recorded |
Offered in SJ-MR100-S (silver) and SJ-MR100-K (black)
Features: Smallest and lightest MD recorder as of June, 1999. Unit incorporates .25um rule LSI and newly developed one beam optical pickup (world's thinnest: 6.6mm). Text display on main body is 2 X 12 characters. Edge mounted jog dial with integral push button for labelling and track selection (while playing a track, other track names may be examined and a new track selected). Can title while playing a track (though machine updates TOC and leaves unit at start of disc after every track title operation). Special "one track record" function puts unit into rec-pause mode after a CD track finishes. Divide rehearsal mode with 60ms adjustment step (like the Aiwa AM-F70 and home decks). Backlit remote. 40 second shock memory. Synchro-recording, sampling rate converter. Time Mark mode (automatic track marks at 3 or 5 minute intervals). Battery charges only when unit is stopped. No AGC(?), recording level control limited to "high/low" sensitivity switch (manual states that High sensitivity is for recording from portable products, and Low sensitivity is for recording from hi-fi products or boomboxes).
Continuous CD
- 1st track recording function When the recording of the 1st track on the CD is finished, it automatically enters the recording standby state, and when the CD is replaced and the 1st track is played again, the recording starts automatically. This is convenient when recording the first tracks of several CDs on one MD continuously.
- "40-second memory anti-vibration function" to protect sound from shocks
- Katakana character input support
- Battery level display function
- Equipped with optical digital input terminal
Specs: Freq. Resp: 20-20kHz +0/-8dB, Headphone amp: 5mW+5mW into 14 Ohms. Line input: impedance: 47kOhms, level: High sens: 178mV, Low sens: 500mv. Mic input: impedance: 600 Ohms, level: 0.4mV. Power sources: Rechargeable: 1.2V, AA cell: 1.5V, AC adapter: 1.8V. AC power consumption at power off: 1.6W.
ATRAC Chip: MN66616RB1
Content adapted from: Panasonic Press Release Panasonic Press Release (MiniDisc Wiki mirror) Details Page Details Page (MiniDisc Wiki mirror) Minidisc.org page personalhifiblog.blogspot Review
Manuals
Repair
Photos
Photo credit: Epstra on Discord.
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Additional specifications and references
| Web Md | No (not NetMD) |
|---|---|
| Atrac Ic | MN66616RB1 (Panasonic) |
| Manual | User manual, Service manual |
| Region | Japan |