Features:

• Built-in monaural speaker and stereo microphone.
• World's smallest and lightest MD recorder with built-in speaker and mic.
• Digital speed control allows -50%-+100% adjustment of playback rate with no change in pitch.
• Large 2-line LCD on main unit (no LCD on remote).
• "Voice operation system" will start and stop recording in response to presence of sound.
• A-B repeat function.
• Finally -- an MD unit reappears with important functions available from buttons on the front panel as opposed to being buried in sub-menus. Front panel buttons appear to be Stop, Pause, Play, Record, Volume, FF/RW, Record Mode, Playback mode, Playback speed (+/-), A-B repeat

Links:

• Panasonic announcement.
• AV Watch coverage.

Accessories: 6-key remote, AC adapter, rechargeable battery case, carrying case, stereo in-ear phones, NiMH cell, dry-cell adapter case

Specs: Headphone amp: 5mW+5mw, Speaker amp: 120mW. Freq. Resp: 20-20kHz (+0/-6dB)

Reviews:

Features:

• NetMD downloading with Beat Jam software.
• World record breaking 130 hour battery life (as of 1/14/2004).
• Large style 3-Line LCD on main body displays 2 lines of Kanji/Hiragana.
• Kanji displaying LCD remote with ability to control recording.
• H.D.E.S. (Panasonic's "special" SP-mode ATRAC tweak)
• Has a CD 1-track recording mode, enters pause mode after recording one track.
• Jog dial.
• X-Bass.
• Docking cradle with separate speakers.

Links:

• Panasonic page
• AVWatch Japan
• Minidisc T-Station

Specs: Headphone amp: 2.8mW+2.8mW, Speaker amp: 900mW+900mW, JEITA, 20-20kHz +0/-6dB. Line in: 33Kohm, Mic in: 600 ohm, Headphone out: 50 ohm

Reviews:

User Manual: SJ-MR270

Features:

• World record breaking 130 hour battery life (as of 1/14/2004).
• Large style 3-Line LCD on main body displays 2 lines of Kanji/Hiragana.
• Kanji displaying LCD remote with ability to control recording.
• Jog dial.
• Stereo mic included.
• X-Bass.
• Docking cradle.
• Differences from SJ-MR270:
  • Non-NetMD
  • No H.D.E.S
  • No one-track recording

Links:

• Panasonic page
• AVWatch Japan
• Minidisc T-Station

Specs: Headphone amp: 2.8mW+2.8mW, JEITA, 20-20kHz +0/-6dB. Line in: 33Kohm, Mic in: 600 ohm, Headphone out: 50 ohm

Reviews:

User Manual: SJ-MR240

Features: Longest playing MD recorder as of 9/2002. Unit appears to be a non-NetMD little brother to the SJ-MR250 with improved battery life (and reduced 3.0mW headphone power [cf. 3.5mW headphone amp of SJ-MR250]). Includes charging cradle and small, separate titanium cone speakers. 10-key titling keypad in charging cradle for track and disk name input as well as MD editing (group, divide, etc.). One finger LCD remote, adjustable recording level for digital, line and mic inputs. Panasonic's "H.D.E.S" audio compression. Handy "1 track recording" feature that pauses unit after recording one CD track. Auto time-mark recording. Kanji and kana display on LCD remote and main unit (but no Kanji/kana titling is possible). Synchro-recording from audio sources (digital and analog?). 4-step battery charge indicator on main body and remote. S-XBS 2-step bass boost. Intro-scan playback. "Train-mode" feature to cut high frequencies on playback to avoid disturbing others nearby. One-track/all-track repeat, random play modes. Battery can be recharged without needing to be empty first. Available in silver, blue and red.

Links:

• Panasonic Japanese press release (mech. trans.)
• Minidisc T-station coverage.
• Brief AVWatch coverage (Japanese)

Included Accessories: LCD remote, AC adapter, stereo "inside-phones", attachable AA cell case, carrying pouch, USB cable, NiMH rechargeable cell, "multi-cradle" with speakers

Specs: Headphone amp: 3mW+3mW, Speaker amp: 900mW+900mW, 100VAC, Freq. Resp. 20-20kHz +0/-8dB

Reviews:

Service Manual: SJ-MR230

Features: Panasonic's first NetMD portable. MDLP and group functions. The unit includes docking stand and small (3cm diameter titanium cone) neodymium magnet "full range" speakers (a concept introduced on the Panasonic SJ-MJ50). Docking stand ("multi-cradle") incorporates NetMD PC connection, charging function (unit can be used while charging), and titling/editing keypad (titling interface based upon cellphone alpha input procedure). Capable of displaying kanji titles on LCDs of main body and remote. Remote features "one finger" control, 4 step battery level display. Divide rehearsal mode in 60ms steps. CD one-track record (record track and pause), recording level control, synchro-record, 2-step S-XBS (bass boost) and auto track-mark (3/5/10? minute) functions. Sampling rate convertor. Play modes: repeat 1/all, shuffle. Panasonic's "H.D.E.S" audio compression. Ships with BeatJam (Justsystem Inc) OpenMG compliant software for audio downloading and control of the portable.

Links:

• Panasonic press release (Japanese).
• Panasonic's Japanese page for the unit.
• AV Watch (Japan) announcement.
• AV-Land (UK) page for unit.
• Minidisc T-Station page for unit.
• Nikkei coverage (English).
• Japan-Direct's photos and page for the unit.
• AVWatch preview (mech. trans.) with good closeups.

Included Accessories: LCD remote, AC adapter, stereo "inside-phones", attachable AA cell case, carrying pouch, USB cable, NiMH rechargeable cell, "multi-cradle" with speakers, NetMD software

Specs: Headphone amp: 3.5mW + 3.5mW, Speaker amp: 900mW+900mW, 100VAC.

Reviews:

User Manual: J/E

Features: Portable MDLP recorder. World's smallest, thinnest and lightest as of 6/2001. "Smart operation pad" (touchpad) for control and titling functions. First recorder with group function support. Divide rehearsal mode in 60ms steps. Backlit remote. 12 character 2 line display on main unit. "One time record" function pauses unit after recording one CD track. Titling possible during playback. Auto-time-mark places track marks every 3, 5 or 10 minutes. Panasonic's "H.D.E.S" audio compression. Apparently has two fixed recording levels: "high" and "low" (or perhaps AGC, with two sensitivity settings). Available in silver, blue and white

Links:

• Panasonic's Japanese page for the unit.
• Minidisc T-Station's page for the unit.
• IGN review of the unit.
• AVLand (UK) page for the unit

Included Accessories: LCD remote, stereo "inside phones", AC adapter, gum-pack NiMH rechargeable cell, AA Alkaline cell external case, rechargeable cell case, carrying pouch

Specs: Headphone amp: 3.5mW+3.5mW, Frequency response: 20-20kHz (+0/-8(!)dB)

Reviews:

User Manuals: SJ-MR220, J/E

Service Manual: SJ-MR220

Features: Unit is world's smallest and lightest portable MD recorder (as of July 2000). Divide rehearsal mode in 60ms steps. Compatible with Panasonic's "MD Network" to interface with other audio devices. 40 second anti-skip shock protection, tone quality switch (S-XBS/train position), two line display and "Smart Operation Pad" (provides soft-touch buttonpads for the usual portable MD button functions and for titling). Panasonic's "H.D.E.S" audio compression.

Links:

• Panasonic's Japanese press release for this unit.
• MDMan.net has several snapshots of the MR200.

Specs: Headphone amp: 3.5mW+3.5mW at 22 ohms. 20-20kHz +0/-6dB

Reviews:

User Manual: SJ-MR200

Service Manual: SJ-MR200

Features: World's 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).

Links:

• Japanese press release for Panasonic's SJ-MR100. Panasonic's Japanese page for the unit.
• Japan Direct's clear photos and English information for the unit.
• Robert contributes a careful review of the Panasonic SJ-MR100.
• HiFi Choice magazine (UK) has a review.

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.

Reviews:

User Manual: SJ-MR100

Service Manual: SJ-MR100

Features: 12 character LCD on main unit. Track/disc titling. Track erase, move, join, divide, all erase. Recording: agc, st/mono. Play: repeat, random, program. LCD remote with track, time, operating mode and battery level display. Selectable "SLC" (sound leakage circuit) modifies sound to avoid disturbing others nearby. Bass boost.

Links:

• JVC's Japanese page for this unit.

Reviews:

User Manual: J/E