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Binaural beats · 0.5-4 Hz

Delta waves

Deep Sleep. Press play, breathe, and let it settle.

Delta 2.5 Hz beat Tap to play
VOL
Silent
Two pure sine waves, 200 Hz and 202.5 Hz, one in each ear. Your brain hears the 2.5 Hz difference as a Delta binaural beat. Headphones are required for this to work. Add Sub Bass layers a felt low end under it. Volume starts low on purpose.

What are Delta binaural beats?

Delta is a binaural beat in the delta band (the slowest brainwaves, 0.5-4 Hz), the rhythm of deep, dreamless sleep and physical restoration. People play it to fall into deep sleep, nap deeply, and support overnight recovery. On this page you can play it free, with no app and no sign-up: just tap the disc above.

It pairs beautifully with breathwork, journaling, yoga, or simply a few quiet minutes with your eyes closed. Start low, stay comfortable, and let the sound do the work.

New to this? Learn how it all fits together in our guide to binaural beats.

How to use it

A simple Delta session.

01

Set the room

Dim the lights, sit or lie down, put your phone face down. Headphones are required for binaural beats.

02

Press play, breathe

Tap the disc. Breathe in for four, out for six. Let the sound be the only thing you are holding.

03

Stay 5 to 15 minutes

Most people settle within a few minutes. Stay as long as it feels good. Tap again to stop.

Make it land

Gear for a deeper Delta session.

Honest picks. Buying through these links earns us a small commission at no cost to you, and keeps this generator free. Full disclosure.

Bose QuietComfort Ultra
Feel the tone

Bose QuietComfort Ultra

World-class noise cancelling and wide, natural sound so the tone surrounds you.

View on Amazon →
Manta Silk Sleep Mask
For sleep sessions

Manta Silk Sleep Mask

Total blackout for looping the tone as you fall asleep. No pressure on the eyes.

View on Amazon →
Bearaby Weighted Blanket
Deep calm

Bearaby Weighted Blanket

Gentle deep-pressure that calms the nervous system while you rest in the tone.

View on Amazon →
Keep going

Related frequencies.

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Theta waves
Meditation
Drop into deep meditation.
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Alpha waves
Calm Focus
Find relaxed focus.
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Beta waves
Alert
Stay alert.
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Delta questions

Common questions.

What is Delta binaural beats used for?

People use Delta binaural beats to fall into deep sleep, nap deeply, and support overnight recovery. A binaural beat in the delta band (the slowest brainwaves, 0.5-4 Hz), the rhythm of deep, dreamless sleep and physical restoration.

How long should I listen to Delta binaural beats?

Five to fifteen minutes is a comfortable session, though there is no rule. Many people loop it quietly in the background while working, journaling, or resting.

Do I need headphones for Delta binaural beats?

Yes. Binaural beats only work with headphones, because the effect comes from a slightly different frequency in each ear. Plain speakers will not produce the beat.

Can I play Delta binaural beats while I sleep?

Yes, this is one of the most common ways to use it. Keep the volume low and comfortable and let it loop.

Is Delta binaural beats scientifically proven?

No. The evidence for specific healing frequencies and beats is limited and mixed. The reliable, reported benefit is relaxation, calm and focus. We avoid medical claims and treat it as a wellness practice.

Written and tested by Alexander Tartakovsky, a DJ, music producer and lifelong headphone and gear enthusiast who has used sound frequencies daily for focus and sleep since age 14. Last reviewed June 2026.

Sources and further reading

For relaxation and wellness only. This is not medical advice.