Hi Wendy! Headphones are not required—you can simply play the session nearby and listen comfortably.
Some people choose headphones because they make the sound clearer, but others prefer listening through a speaker placed close by. Both approaches are commonly used.
Many listeners start with about 20–30 minutes per session and adjust based on how they feel. 🌿

Hi Steve 😊 Some NAC-related audios use very low or subtle tones, so depending on your speakers, headphones, and individual hearing range, you may hear very little sound or only faint pulses/clicks 💙

Human hearing also has a limited range, and some frequencies may fall partially outside what certain people can clearly hear—especially very low or very high tones 🌿

Please don’t keep the volume at maximum for long periods. You can also try:
• a different browser or device
• external speakers instead of phone speakers
• another frequency audio to compare

If other audios work normally but this one seems almost silent, that can still be normal for certain low-frequency tracks 😊