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SKU# V407141BU000-410


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Next Generation Digital Voice Recorder

The new DM-901 unites premium sound quality with new mobile features for easy note-taking in any situation. For the first time on an Olympus recorder, Wi-Fi links the DM-901 to a user’s smartphone, from which an available app can remotely trigger the DM-901 to record on command. This feature is ideal for capturing events when there is a significant distance between the user and the speaker.

Remote control by smartphone

At events such as seminars and lectures where there is distance from the speaker , you can still achieve the clearest recordings. Set the recorder close to the speakerand use the available app to control the recorder from a distance You can start and stop the recording from a distance so you only capture the content you need. Recorded files and visual indexes linked to the files can be easily uploaded to Dropbox through a smartphone and accessed with a web browser.

For information on pairing your audio device click here to view our set-up guide.

Use photos from your smartphone as a visual index

Images taken by your smartphone’s camera during recording can be used as a visual index by linking them to the timeline. The visual index makes it easier for you to search or manage your recording than relying simply on audio and text.


The latest directivity control technology has been used to make it possible to switch direction with the "+" and "-" buttons. It provides value by zooming in on audio sources when recording a discussion or lecture from a distant position or when recording in an environment in which there is a lot of ambient sound. The new zoom microphone mode adjusts the recording level higher according to the zoom.

Recording hours and battery life

The DM-901 offers 850 hours of recording time and an impressive 29 hours of battery life.

Write meeting minutes efficiently with Voice Playback

By using the Voice Playback function, the recorder skips the non-voice and dead air parts of the recording and only plays back where there is sound. For example, if 70% of the recording is conversation, a one-hour recording can be shortened to approximately. 40 minutes. This allows you to more efficiently transcribe your recording into meeting minutes.

Voice Balancer

When recording meetings in large rooms, the recording levels of each sound tend to vary due to different distances and positional relationships with respect to sound sources. Even in these cases, the Voice Balancer function adjusts the volume levels of all speakers to a certain level so that it is more clear to hear.

Noise cancellation for clear playback quality

The noise-cancellation function powerfully reduces unwanted ambient noise such as air-conditioner noise or projector fan noise and enables clear playback quality. The function is very effective when playing back meeting recordings.

Voice Guidance

The voice guidance feature can read out the names of menu items on the screen so you can operate with confidence by touch alone.

Enhanced Screen and User interface

The DM-901 offers a high definition 2” color LCD which perfectly showcases the new user interface.

Recording Format Linear PCM, MP3 and WMA
Internal memory 4GB
External Memory Standard SD(Max. 64GB)
LCD Screen 2" Color LCD
Battery Type Li-ion battery LI-50B
Battery Life (Rec)  29H(PCM44.1kHZ)
(Play)  29H(EAR)
Folders/Messages 5/600 per folder
Internal microphone frequency range 70-20,000Hz
Recording Mode PCM 48k/16bit (40 - 23000Hz)
44.1k/16bit (40 - 21000Hz)
WMA 128kbps
Stereo 64kbps
WMA 32kbps (40 - 13,000Hz)
Mono 16kbps
8kbps (40 - 3,000Hz)
MP3 320kbps
Stereo 256kbps (40 - 20,000Hz)
128kbps (40 - 17,000Hz)
MP3 Mono 64kbps
Maximum Recording Time 850h(WMA 8kbps)
Playback Format WMA (5kbps~320kbps)
MP3 (8kbps~320kbps)
Audible -
Playback Mode File x
File Repeat x
Folder   x
Folder Repeat x
All    x
All Repeat x
Playback Speed Fast Playback: (25steps Max. x6.0)
Slow Playback: (5steps Min. x0.5)
Zoom Microphone x
Voice Guidance x
Podcast Mode x
Supplied Accessories Lithium-ion Rechargeable battery
AC Adaptor
Stereo Earphones
USB Cable
Olympus Sonority Software CD
Body size 4.5" x 2" x 0.7"
Weight 3.7 ozs including battery
Specifications and design are subject to change without notice.

Images, videos and effects are for simulation purposes only, and features may differ by model. Prices, specifications and design are subject to change without notice or obligation on the part of the manufacturer.


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