Yes. Our subliminals are specifically designed to use spatial audio to help engage both brain hemispheres at once, which improves the overall processing, impact and effectiveness. While these effects do significantly enhance the results, they do not mean you absolutely must use headphones; but, whenever possible, you should favor headphones over speakers, and stereo speakers over mono-channel speakers.
If you choose to use headphones, and you wish to use them while you sleep, be sure to use headphones that will not fall off while you sleep.
Also be aware that ultrasonic subliminal audio is still audio and if you listen to it at high enough volumes, it can have negative effects on your hearing, just as any other audio would. It is therefore strongly recommended that if you use headphones, you use a masked version of the program instead of the ultrasonic version.
Should you choose to use the ultrasonic version of the program with headphones, we strongly recommend that you calibrate the volume carefully according to the instructions, and mark on your player what that volume is. Then, double check that the volume is correct before and after using your subliminal every time you use it. Zero volume is even worse than too much.
Headphones maximize the stereo separation, and therefore produce the best results; stereo speakers are next best, and work better if you can use them facing one another with your head between them, similar to headphones. Mono speakers, as found on many cell phones, are serviceable, but not the best way to play subliminals.
Posted in: Hardware Questions (Speakers & Headphones)