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Olympus DM-720 High Performance Business Audio Recorder


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Product Details

Olympus DM-720 High Performance Business Audio Recorder

The top of the class DM-720 includes high quality recording features packed into an efficient, smart metal body. It is equipped with an easy-to-use interface, extended editing operations and various playback functions. The DM-720 provides outstanding practicality and reliability to support your recording needs.

Main features

  • TRESMIC - Three microphone system for high-quality sound recording
  • Lightweight, high quality metal body
  • Extensive transcription functionality
  • Direct PC connection for convenient data storage and charging
  • Attachment usable as both a clip and a stand

High-quality recording

“TRESMIC” Three-microphone system for superior sound
The DM-720 features a three microphone system that includes both directional and omnidirectional microphones to faithfully capture the depth and fullness of the sounds recorded. This Tresmic combination provides a wide frequency range for the most demanding professionals.

Zoom microphone for recording from a distance

Using the latest technologies, zoom microphone unleashes the power of proximity in noisy environments or when recording from a distant position. The zoom microphone allows you to expand and contract the microphone range by adjusting the direction with the "+" and "-" buttons on the recorder.

Compact recorder with 48 kHz/ 16 bit linear PCM recording

Create high quality recordings using linear PCM format. While this feature may exceed everyday business needs, when selecting this bit rate and sampling frequency, users can readily make CDs of their own recordings.

Automatic sensitivity adjustment with Intelligent Auto Mode

The Intelligent Auto Mode function automatically adjusts the microphone sensitivity according to the input level. This function makes it easy for users by automatically adjusting the microphone sensitivity according to the volume of the speaker.

Low-cut filter eliminates extraneous noise

The low-cut filter is used to eliminate sound at frequencies lower than 300 Hz during the recording process. By cutting the lower frequency sounds during recording your audio is free of background noise and distortion during playback.

Playback functions

Create meeting minutes efficiently with Voice Playback

The Voice Playback function allows you to skip non-voice parts during playback, and only play the parts of the file where there is vocal content. Voice Playback saves time and improves efficiency during transcription.

Voice Balancer delivers audio quality that is easier to hear

The Voice Balancer function works during playback, the volume of recorded voices is adjusted to make dialogue easier to hear. When voices are at different volume levels due to the distance and physical relationship to the recorder, the Voice Balancer automatically makes smaller voices louder, and ensures that louder voices stay below a given level, providing playback where everyone is audible.

Noise cancellation for clear playback quality

The noise cancellation function powerfully reduces unwanted ambient sounds such as air conditioner noise or projector fan noise to enable clear playback quality.

Create meeting minutes efficiently with "Transcription mode"

Transcription mode comes in handy when creating minutes from recordings. While transcribing, users frequently repeat play, and stop to check the text. In Transcription Mode, the recorder will automatically playback the 3 seconds before the stop, so you can check the contents before proceeding. On the other hand, fast forward is preset to 3.5x so you can skip the silence in your recording.

Effective language learning through Speech Shadowing

Speech shadowing is an effective technique to learn foreign language by repeating the subject right after hearing it. This mode helps you learn languages by having the audio playback, and then silently playback repeatedly, so you can easily practice speech.


Direct PC connection without a cable

The DM-720 can connect directly to your PC via the built-in USB connector. This makes it possible to save data anytime, anywhere. Not only can you save and share data, but the DM-720 can also be charged via USB.

Clip Stand Attachment

Included with this recorder is a handy attachment that can be fastened to the rear of the recorder for use as a stand or clip. The clip can be attached to your pocket or notebook for easy access or it can be used as a stand to direct the recorder towards the audio source.

Voice guidance and other usability improvements

The voice guidance feature provides audio announcements of the recorders operations in an easy to understand spoken voice. For further ease-of-use, the buttons are designed so the recorder can be maneuvered without looking at the display.

The File Divide function makes it easier to handle longer recordings

Large audio files can be divided on the recorder without the use of a PC. Split and divide files, by topic or size for easy file management.

microSD card slot

The DM-720 includes a micro SD card slot that supports cards up to 32 GB in size. You can select whether to use the 4GB of built-in memory or a micro SD card from the recorder menu.

Microphone sensitivity Hi/Mid/Lo/Auto
Voice activated recording  VCVA/Voice Sync.
Lowcut filter x
Internal microphone frequency range 20~20,000Hz(Center Mic ON)
Stereo/Mono (Built-in microphone) Stereo/Tresmic
Recording format PCM/MP3
44.1kHz/128kbps Approx. 61 hrs
44.1kHz/64kbps (mono) Approx. 123 hrs
11.025kHz/8kbps (mono) Approx. 985 hrs
Internal memory  4GB
External memory microSD (Max.32GB)
PC connectivity USB Direct
Plug-in power
Noise cancel x
Voice Balancer x
Voice filter -
Playback speed control 3.5X - 0.5X
Forward skip x (File skip, 10sec, 30sec, 1min, 5min, 10min)
Reverse skip x (File skip, 1sec to 3sec, 5sec, 10sec, 30sec, 1min, 5min)
A-B repeat x
Recording & playback scene select x
Calendar Search x
File divide x
Index mark x (Max. 99)
Simple mode (Selectable font size) -
Power requirements AAA alkaline battery x1, or AAA Ni-MH rechargeable battery x1
Battery life - Recording Approx. 52hr.
Playback (Earphone) Approx. 35hr.
Internal battery charge x
Speaker /Maximum output Built-in φ18mm round dynamic speaker/ 150mW
Microphone jack φ3.5mm
(impedance 2kΩ)
Earphone jack φ3.5mm
(impedance 8Ω or more)
USB microphone/speaker x
Dimensions (HxWxD) 4.17 x 1.6 x 0.57
Weight (including batteries) 2.5 oz


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