Alot of people are asking questions along the lines of:
Do earphones work?
Yes, earphones work, but headphones are better since they can block off any outside interference. As long as your headphones/earphones can go from 20Hz to 20,000Hz (the minimum and maximum the human ear can hear) then your ok. Heres a test to see if your headphones can play all those frequencies:
http://www.youtube.com/watch?v=4nUkNvl8mQw
Note that what your listening with MUST be a headset or earphones and MUST be stereo, because each ear must hear a separate frequency. Mono headsets will NOT work and speakers will NOT work.
Also, regarding how the frequencies for the effects are lower than 20Hz. What binaural tracks do is play two slightly different sound in both ears (like 500Hz and 510Hz) to trick the ears into thinking that the frequency is something much smaller (like 10Hz for our example earlier). You do NOT need a headset that goes below 20Hz.
tl;dr As long as your headset/earphones are stereo, your in a quiet place, and they can pick up frequencies from 20Hz to 20,000Hz, your good.
