Best low frequency cans are the Audeze LCD-2 but at $995 it's prolly not what you are looking for. Most cans really can't get down in the sub-40Hz range very well.

I'd suggest the Sennheiser HD280Pro, they go for around $100. at around $50, the Beyerdynamic DT235 sounds surprisingly good.

Tyll K H wrote:

Best low frequency cans are the Audeze LCD-2 but at $995 it's prolly not what you are looking for. Most cans really can't get down in the sub-40Hz range very well.

I'd suggest the Sennheiser HD280Pro, they go for around $100. at around $50, the Beyerdynamic DT235 sounds surprisingly good.

I agree about the Beyerdynamic DT235, very nice sound, at a good price.

LordElysian wrote:

what is the practicality of having headphones that are as low as 5 hz?

Extension down to 5 Hz isn't really practical.  CD spec doesn't reach that low, and in the recording studio, most recordings are given a high pass filter that is way above 5 Hz.  Sometimes it's more like 28 Hz!

I would recommend a quality pair of over the ear headphones if your main concern is audio quality.  The mentioned pairs are good candidates, you might also have a listen to Sony MDR7506 if you're looking for revealing, flat, and still enjoyable to listen to.

Let us know what you choose!

Sound below about 30 hz loses its "tone" quality to most ears and you feel it as a sound pressure, but don't really hear it as a tone. Of all the headphones I've had from $1500 down to $50, the best of those had a small but significant output as low as 15 hz, but below that nothing useful. If you could hear 10 hz and lower, it would sound weird because then you'd be hearing the individual "beats" as the waveform alternates between peak and trough. Not good for music.