| Model |
DM-420 |
| Recording Format |
MP3 and WMA |
| Recording Media |
Built-in 2GB flash memory (and micro SD card slot) |
| Recording Time |
MP3:
44.1 kHz 320 kbps 13 hours, 45 minutes
44.1 kHz 256 kbps 17 hours, 15 minutes
44.1 kHz 192 kbps 23 hours, 00 minutes
44.1 kHz 128 kbps 34 hours, 45 minutes
WMA:
STXQ 44.1 kHz 128 kbps 34 hours, 00 minutes
STHQ 44.1 kHz 64 kbps 68 hours, 00 minutes
STSP 22 kHz 32 kbps 136 hours, 00 minutes
HQ 44.1 kHz 32 kbps 136 hours, 00 minutes
SP 22 kHz 16 kbps 268 hours, 00 minutes
LP 8 kHz 8 kbps 533 hours, 00 minutes |
| Card Format |
micro SD card slot |
| Input Level |
-60 dBv |
| PC Interface |
USB |
| Folders Messages |
Voice: 5 folders / Up to 999 files per folder
Music: 1 folder / Up to 999 files
Podcast: 1 folder / up to 999 files |
| Sampling Frequency |
MP3: 44.1 kHz
WMA: 8- 44.1 kHz |
| Overall Frequency Response |
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: 40-15,000 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 |
| Practical Maximum Output |
320 mW |
| Speaker |
23 mm round dynamic speaker |
| Microphone Jack |
3.5 mm / Impedance, 2.2 kohms |
| Earphone Jack |
3.5 mm / Impedance, 8 ohms or more |
| Power Supply |
Two AAA AAA NiMH rechargeable batteries or AC power supply |
| Battery Life |
NiMH: Recording - Approximately 51 hours |
| Size |
4.33 x 1.53 x 0.63 in. (110 x 38.9 x 16 mm) without protrusions |
| Weight |
2.96 oz. (84 g) |
| OS Supported |
Microsoft® Windows® XP/Vista
Mac OS X 10.4.11 - 10.5 |
| CPU |
Windows XP/Vista: 32bits (x86) of 1GHz and above or 64bits (x64) processor Mac OS X 10.4.11 10.5: Power PC G5 or Intel Multicore Processor 1.5GHz and above |
