DM-720 Digital Voice Recorder

$199.00

Outstanding reliability for business use

The DM-720 includes high quality features packed into an efficient, smart body. Equipped with an easy-to-use interface, editing functions that extend audio use, and various playback functions, this recorder provides outstanding practicality and reliability to support your business needs.

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Description

High quality recording

The 3-microphone “TRESMIC” system available on the DM-720 delivers high quality sound recording. The recorder is also equipped with many more functions to further enhance sound recording quality.

A full array of playback functions

The DM-720 includes a variety of useful playback functions for all business situations. Functions include Voice Playback, to skip non-speech parts of your recordings, Voice Playback to ensure everyone in your recording is heard, and noise cancellation technology to remove unwanted ambient noise.

Usability

The recorder includes an easy-to-use interface, and convenient functions that extend your use. The DM-720 has a built-in USB connector with recharge function, expandable microSD memory, and voice guidance. A convenient clip stand attachment is included, to allow you to attach the recorder to a pocket or notebook.

Specifications


Recording formats

Linear PCM format / MP3 format

Sampling frequency

Linear PCM format[48.0 kHz / 16 bit]: 48.0 kHz
[44.1 kHz / 16 bit]: 44.1 kHz
MP3 format[320 kbps]: 44.1 kHz
[128 kbps]: 44.1 kHz
[64 kbps (mono)]: 44.1 kHz
[8 kbps (mono)]: 11.025 kHz

Maximum headphone output

Recorder: ≦ 150 mV (according to EN 50332-2)

Recording media

Built-in NAND flash memory4 GB
microSD cardSupports 2GB to 32GB
  • Some recording media memory capacity is used as a management area, so the actual usable capacity will always be slightly less than the displayed capacity.

Speaker

Built-in Ø18mm dynamic speaker
Maximum working output: 150mW (8Ω speaker)

Microphone Jack

Ø3.5mm, impedance 2kΩ

Earphone Jack

Ø3.5mm, impedance 8Ω minimum

Power source

Specified voltage1.5 V
BatteryAAA dry-cell battery x1 (LR03) or Ni-MH rechargeable battery x1
External power supplyUSB Connecting AC Adapter (model A514; DC5V)

External dimensions

105.9 × 39.6 × 14.4 mm

  • Not including largest projection

Weight

72g

  • including battery

Operating temperature

0 to 42°C (32 to 107.6°F)

Frequency response

When recording from microphone jack

Linear PCM format[48.0 kHz / 16 bit]: 20 Hz – 23 kHz
[44.1 kHz / 16 bit]: 20 Hz – 21 kHz
MP3 format[320 kbps]: 20 Hz – 21 kHz
[128 kbps]: 20 Hz – 17 kHz
[64 kbps (mono)]: 20 Hz – 13 kHz
[8 kbps (mono)]: 20 Hz – 3.5 kHz

When recording with built-in microphone

Recoding(centre microphone ON)20 Hz – 20 kHz
Recoding(centre microphone OFF)60 Hz – 20 kHz
  • Frequency response upper limit is set by recording mode during MP3-format recording.

During playback

20 Hz – 20 kHz
  • The upper and lower limit values of the frequency response depend on each recording format.

Battery life

When recording with built-in stereo microphone (using internal memory)

Recording modeAlkaline dry cell batteryNickel-metal hydride rechargeable battery
Linear PCM format48.0 kHz / 16 bit26 hours (approx.)20 hours (approx.)
44.1 kHz / 16 bit28 hours (approx.)21 hours (approx.)
MP3 format320 kbps31 hours (approx.)22 hours (approx.)
128 kbps35 hours (approx.)25 hours (approx.)
64 kbps mono39 hours (approx.)28 hours (approx.)
8 kbps mono52 hours (approx.)38 hours (approx.)
  • The battery life figures shown here were determined using an Olympus test method (When [Mic Select] is set to [Central Mic Off], and [LED] is set to [Off]). Actual batterylife figures will vary greatly according to the battery used and usage conditions (Changing the playback speed or using the [Zoom Mic], [Noise Cancel] and [Voice Balancer] functions may affect the battery life).
  • Battery life will be shorter when using a nickel-metal hydride rechargeable battery that has been used repeatedly.
  • Battery life will be shorter when using a microSD card.

During audio file playback (all playback modes)

During speaker playback

Recording modeAlkaline dry cell batteryNickel-metal hydride rechargeable battery
Linear PCM format48.0 kHz / 16 bit13 hours (approx.)11 hours (approx.)
44.1 kHz / 16 bit13 hours (approx.)11 hours (approx.)
MP3 format320 kbps13 hours (approx.)11 hours (approx.)
128 kbps13 hours (approx.)11 hours (approx.)
64 kbps mono13 hours (approx.)11 hours (approx.)
8 kbps mono13 hours (approx.)11 hours (approx.)
  • The battery life figures shown here were determined using an Olympus test method (When [Mic Select] is set to [Central Mic Off], and [LED] is set to [Off]). Actual batterylife figures will vary greatly according to the battery used and usage conditions (Changing the playback speed or using the [Zoom Mic], [Noise Cancel] and [Voice Balancer] functions may affect the battery life).
  • Battery life will be shorter when using a nickel-metal hydride rechargeable battery that has been used repeatedly.
  • Battery life will be shorter when using a microSD card.

During earphone playback

Recording modeAlkaline dry cell batteryNickel-metal hydride rechargeable battery
Linear PCM format48.0 kHz / 16 bit26 hours (approx.)20 hours (approx.)
44.1 kHz / 16 bit28 hours (approx.)21 hours (approx.)
MP3 format320 kbps30 hours (approx.)22 hours (approx.)
128 kbps30 hours (approx.)22 hours (approx.)
64 kbps mono31 hours (approx.)22 hours (approx.)
8 kbps mono35 hours (approx.)25 hours (approx.)
  • The battery life figures shown here were determined using an Olympus test method (When [Mic Select] is set to [Central Mic Off], and [LED] is set to [Off]). Actual batterylife figures will vary greatly according to the battery used and usage conditions (Changing the playback speed or using the [Zoom Mic], [Noise Cancel] and [Voice Balancer] functions may affect the battery life).
  • Battery life will be shorter when using a nickel-metal hydride rechargeable battery that has been used repeatedly.
  • Battery life will be shorter when using a microSD card.

Recording time

Linear PCM format

Recording modeRecording mode
48.0 kHz/16 bit44.1 kHz/16 bit
Internal memory4 GB5 hours (approx.)5 hours, 30 minutes (approx.)
microSD card32 GB44 hours (approx.)48 hours (approx.)
16 GB22 hours (approx.)23 hours, 30 minutes (approx.)
8 GB11 hours (approx.)11 hours, 30 minutes (approx.)

MP3 format

Recording modeRecording mode
320 kbps128 kbps64 kbps mono8 kbps mono
Internal memory4 GB24 hours, 30minutes (approx.)61 hours (approx.)123 hours (approx.)985 hours (approx.)
microSD card32 GB212 hours (approx.)530 hours (approx.)1060 hours (approx.)8480 hours (approx.)
16 GB105 hours (approx.)264 hours (approx.)525 hours (approx.)4220 hours (approx.)
8 GB52 hours (approx.)132 hours (approx.)264 hours (approx.)2110 hours (approx.)
  • Actually available recording times may be shorter than the figures shown here when making short recordings repeatedly (Equipment displays of available/elapsed recording times should beconsidered guideline values).
  • Available recording time will also vary due to differences in the available memory capacity of different microSD cards.

Maximum recording time per file

Recording modeRecording time
Linear PCM format48.0 kHz/16 bit3 hours (approx.)
44.1 kHz/16 bit3 hours, 20 minutes (approx.)
MP3 format320 kbps29 hours, 40 minutes (approx.)
128 kbps74 hours, 30 minutes (approx.)
64 kbps mono149 hours (approx.)
8 kbps mono1193 hours (approx.)
  • The maximum file size is limited to about 4GB in the MP3 format, and to about 2 GB in the linear PCM (WAV) format.
  • Regardless of the amount of remaining memory, the maximum recording time per file is restricted to the following values.

Number of music tracks (songs) that can be recorded

Internal memory (4 GB)900 tracks (approx.)

  • At 128 kbps, 4 minutes per track
  • Note that recorder specifications and appearance are subject to change without prior notice for performance improvements or other upgrading.

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