20 Hz Beta Edge (12 Hours) – BLACK SCREEN • Sub-Bass Test, Focus, Zone Out

This video plays a continuous 20 Hz low-frequency tone for 12 hours on a completely black screen – no music, no melody, no visuals. Just a deep sub-bass signal right at the edge of human hearing.

In EEG research, around 20 Hz lies inside the beta brainwave band (roughly 13–30 Hz), which is studied in connection with alertness and active thinking. This audio, however, is simply an external sound wave, not a brainwave, and it does not claim to change your EEG or provide any medical or psychological effect.

You can use this 20 Hz track for:

Subwoofer & home theater tests – see how low your system can really go

A subtle vibration-like background while you relax or zone out

Neutral sound masking for a dark, minimal sound bed

A simple low-frequency reference tone for audio experiments

What’s inside:

Duration: 12 hours (12:00:00) continuous playback

Audio: single 20 Hz low-frequency tone at a constant level

Visual: full black screen – no motion, no flashing, OLED-friendly

How to listen (important):

Start at VERY low volume – 20 Hz can move a lot of air and stress speakers.

Increase slowly until you reach a comfortable level; never push your system to its limit.

Avoid listening at high volume for long periods – protect your ears and your gear.

Do not use headphones at high levels, and never while driving or operating machinery.

⚠️ Disclaimer:
This audio is for ambient listening, audio testing and personal experimentation only. It does not claim to heal, cure, treat or prevent any condition and is not a substitute for medical, psychological or therapeutic care. If you have hearing, health or sleep issues, please consult a qualified professional.

If this 20 Hz beta-edge sub-bass works for your subwoofer tests or low-key sessions, add it to your playlist and come back whenever you want to sink back into the low end.


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Disclaimer:
The audio content on this channel is intended for relaxation and entertainment purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. If you are experiencing physical or mental health issues, please consult a qualified healthcare provider.
Do not listen to these frequencies if you have a medical condition that may be affected by sound stimulation (e.g. epilepsy, auditory sensitivity, or neurological disorders). Use responsibly and avoid listening while driving or operating heavy machinery.