A digital microphone is simply an analog microphone with a built-in Analog to Digital (A/D) converter (AKA a digitizer). I'm 99.9% certain it will not work with an analog recorder. The .1% is that you may be able to find one of these with a separate analog output that you could plug into your Walkman - but I doubt it. Most of the inexpensive ones appear to be made to plug into a computer's USB port.