Question: Is hands-free recording supported on the Olympus DS-3400 digital voice recorder?
No, that feature is not supported on an Olympus DS3400. Hands-free recording is only available on the DS5000/is DVRs. Is you open the Olympus DSS Player Pro R5 Dictation Module, you will find that hands-free is not an option in the list.
Verification Source: Digaulle Elhaje, Olympus Product Manager