The Dm4 has more memory, and can record in WAV. As far as I've seen, I'm not too sure about this but the DM-4 appears to be the only one that can read DAISY books.
-----Original Message----- From: pc-audio-boun...@pc-audio.org [mailto:pc-audio-boun...@pc-audio.org] On Behalf Of Donald L. Roberts Sent: Monday, March 21, 2011 10:14 PM To: pc-audio@pc-audio.org Subject: Difference between Olympus M2 and M4 Would someone familiar with both of these Olympus recorders please tell me the essential differences between the two both in functionality and in specifications. Thanks. Don Roberts To unsubscribe from this list, send a blank email to: pc-audio-unsubscr...@pc-audio.org To unsubscribe from this list, send a blank email to: pc-audio-unsubscr...@pc-audio.org