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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Features

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 memory: 4 GB
microSD card: Supports 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

Recording time

Linear PCM format

Recording mode		Recording mode
Recording mode		48.0 kHz/16 bit	44.1 kHz/16 bit
Internal memory	4 GB	5 hours (approx.)	5 hours, 30 minutes (approx.)
microSD card	32 GB	44 hours (approx.)	48 hours (approx.)
	16 GB	22 hours (approx.)	23 hours, 30 minutes (approx.)
	8 GB	11 hours (approx.)	11 hours, 30 minutes (approx.)

MP3 format

Recording mode		Recording mode
Recording mode		320 kbps	128 kbps	64 kbps mono	8 kbps mono
Internal memory	4 GB	24 hours, 30minutes (approx.)	61 hours (approx.)	123 hours (approx.)	985 hours (approx.)
microSD card	32 GB	212 hours (approx.)	530 hours (approx.)	1060 hours (approx.)	8480 hours (approx.)
	16 GB	105 hours (approx.)	264 hours (approx.)	525 hours (approx.)	4220 hours (approx.)
	8 GB	52 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 mode		Recording time
Linear PCM format	48.0 kHz/16 bit	3 hours (approx.)
Linear PCM format	44.1 kHz/16 bit	3 hours, 20 minutes (approx.)
MP3 format	320 kbps	29 hours, 40 minutes (approx.)
	128 kbps	74 hours, 30 minutes (approx.)
	64 kbps mono	149 hours (approx.)
	8 kbps mono	1193 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

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.

Power source

Specified voltage 1.5 V
Battery AAA dry-cell battery x1 (LR03) or Ni-MH rechargeable battery x1
External power supply USB 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

Battery life

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

Recording mode		Alkaline dry cell battery	Nickel-metal hydride rechargeable battery
Linear PCM format	48.0 kHz / 16 bit	26 hours	20 hours
Linear PCM format	44.1 kHz / 16 bit	28 hours	21 hours
MP3 format	320 kbps	31 hours	22 hours
	128 kbps	35 hours	25 hours
	64 kbps mono	39 hours	28 hours
	8 kbps mono	52 hours	38 hours

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 mode		Alkaline dry cell battery	Nickel-metal hydride rechargeable battery
Linear PCM format	48.0 kHz / 16 bit	13 hours (approx.)	11 hours (approx.)
Linear PCM format	44.1 kHz / 16 bit	13 hours (approx.)	11 hours (approx.)
MP3 format	320 kbps	13 hours (approx.)	11 hours (approx.)
	128 kbps	13 hours (approx.)	11 hours (approx.)
	64 kbps mono	13 hours (approx.)	11 hours (approx.)
	8 kbps mono	13 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 mode		Alkaline dry cell battery	Nickel-metal hydride rechargeable battery
Linear PCM format	48.0 kHz / 16 bit	26 hours (approx.)	20 hours (approx.)
Linear PCM format	44.1 kHz / 16 bit	28 hours (approx.)	21 hours (approx.)
MP3 format	320 kbps	30 hours (approx.)	22 hours (approx.)
	128 kbps	30 hours (approx.)	22 hours (approx.)
	64 kbps mono	31 hours (approx.)	22 hours (approx.)
	8 kbps mono	35 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.

DM-720