Features:

• A first for Sharp: Automatic (with settable low/high range) and manual recording level control (IM-DR420 only)
• NetMD downloading at 50x realtime
• 1-bit digital amp
• Group mode support
• Play modes: all, shuffle, all-repeat, shuffle-repeat
• Digital X-Bass
• Auto time-mark (3, 5, and 10 minute intervals)
• Line synchro-start recording (microphone synchro-start recording [i.e. voice activated recording] on IM-DR420)

Variants:

• IM-DR400 is non-remote base model.
• IM-DR410 is apparently identical to IM-DR400 but comes with carrying pouch and optical cable.
• IM-DR420 differs from DR400 and DR410, adding microphone input (with auto and manual recording level function) and non-LCD remote.

Included Accessories: Both units: 4-pole earphones, 4-pole to 3 pole conversion cable, AC adapter, carrying pouch, optical cable, analog cable (1/8" stereo to RCA x 2), CD-ROM, USB cable. IM-DR420 only: non-LCD remote, NiMH battery (AA formfactor), NiMH case

Links:

• Sharp UK manuals
• my-minidisc.com IM-DR410 page
• my-minidisc.com IM-DR420 page

Specs: Headphone amp: 8mW+8mW, 0.2% THD. Disc RPM: 400-1800 playback, 400-2700 recording

Reviews:

User Manuals: IM-DR400, IM-DR400 Quickstart, IM-DR410, IM-DR410 Quickstart, IM-DR420, IM-DR420 Quickstart, Software Preinstall, BeatJam