DM-550

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Specifications

Main Specifications

Recording media Built-in memory 4 GB
Recording media Removable memory card microSD / microSDHC Card (512 MB - 16 GB)
Recording frequency response (mic) 70 - 20,000 Hz
Folders Audio (5) / Music (max. 128) / Podcast
Files per folder Up to 999 files (Voice) / Up to 999 files (Music)
VCVA*1 Yes
Microphone sensitivity level 3 steps (High / Mid / Low)
Manual recording level setting Yes
Scene select (Record / Playback) Yes
Playback format (sampling frequency / bit rate) PCM: 44.1 - 48 kHz / 16-bit
MP3: 8 - 44.1 kHz / 8 - 320 kbps
WMA: 8 - 44.1 kHz / 5 - 256 kbps
Play mode File / File Repeat / Folder / Folder Repeat / All / All Repeat / Random
Playback speed control Fast (20 steps,up to 2.0x) / Slow (10 steps, up to 0.5x)
Intro play Yes
Podcast support Yes
File move / copy ( folder - folder) Yes
File move / copy (Built-in memory - microSD / microSDHC card) Yes
Partial erase / File split Yes (PCM only)
FF / REW Yes
CUE / REV Yes
Skip space (forward / reverse) Yes
Index mark Up to 16
LCD backlight White LED
USB interface Storage Class (2.0 Hi-Speed) / Audio Class / HID Class
Speaker Ø23 mm
Maximum output 320 mW
MIC jack Yes (Ø3.5 mm / Impedance 2 kΩ )
EAR jack Yes (Ø3.5 mm / Impedance 8Ω or more)
External power supply USB
Battery AAA alkaline x 2 / BR401(AAA Ni-MH) x 2
Battery life(approx.) REC (LP mode):51 hours
PLAY (speaker) :19 hours
Dimensions (without protrusions) 110 x 38.9 x 16 mm
Weight (including batteries) 84 g

Recording frequency response (line-in)

PCM 48 kHz / 16-bit 40 - 23,000 Hz
44.1 kHz / 16-bit 40 - 21,000 Hz
MP3 44.1 kHz / 320 kbps 40 - 20,000 Hz
44.1 kHz / 256 kbps 40 - 20,000 Hz
44.1 kHz / 192 kbps 40 - 19,000 Hz
44.1 kHz / 128 kbps 40 - 17,000 Hz
WMA STXQ (44.1 kHz / 128 kbps) 40 - 19,000 Hz
STHQ (44.1 kHz / 64 kbps) 40 - 16,000 Hz
STSP (22 kHz / 32 kbps) 40 - 9,000 Hz
HQ (44.1 kHz / 32 kbps) 40 - 13,000 Hz
SP (22 kHz / 16 kbps) 40 - 8,000 Hz
LP (8 kHz / 8 kbps) 40 - 3,000 Hz

Recording time

PCM 48 kHz / 16-bit 5 hr. 45min.
44.1 kHz / 16-bit 6 hr. 15 min.
MP3 44.1 kHz / 320 kbps 27 hr. 45 min.
44.1 kHz / 256 kbps 34 hr. 45 min.
44.1 kHz / 192 kbps 46 hr. 15 min.
44.1 kHz / 128 kbps 69 hr. 30 min.
WMA STXQ (44.1 kHz / 128 kbps) 68 hr.
STHQ (44.1 kHz / 64 kbps) 136 hr.
STSP (22 kHz / 32 kbps) 272 hr.
HQ (44.1 kHz / 32 kbps) 272 hr.
SP (22 kHz / 16 kbps) 535 hr.
LP (8 kHz / 8 kbps) 1065 hr.
  • *1 VCVA: Acronym for Variable Control Voice Actuator; starts recording in response to sound input; stops recording after approx. 1 sec. of silence.