Marvin7, the ideal situation is one in which the sound is neutral and not manipulated. Distortion is not optimal for this kind of application.

Briskly, thanks for the reply. To clarify, I am not in the need for a low frequency generator. I am looking for recommendations on headphones that are best suited to listening to frequencies. Appreciate your suggestion. Would very much appreciate hearing from those who can speak to both sound...

I have somewhat of an odd request and am hoping for recommendations and guidance. I am looking forover-the-ear headphones that will be used for listening to frequencies. When I say frequency it is literally a frequency at a specific octave. The frequency will change depending on the...