Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep: Audiobook
Book 1 of the Sleep Frequencies for Nervous System Regulation series
According to The Books Insider's catalog data, the Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep audiobook runs 15.8 hours unabridged, narrated by Marius D. Tennant (about 10.5 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 15.8 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 32 days |
| 1 hour / day | 16 days |
| 2 hours / day | 8 days |
| 1 hour / day at 1.5× | 11 days |
You'll finish in – by –
Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.
What our data says
- At 15.8 hours, it runs longer than 97% of the 10,901 Medicine & Naturopathy audiobooks in our catalog.
About as long, on the Medicine & Naturopathy shelf
250 Medicine & Naturopathy audiobooks in our catalog run within 10% of this length. The most popular on the store:
- Magicians of the Gods: Sequel to the International Bestseller Fingerprints of the Gods
- In the Realm of Hungry Ghosts: Close Encounters with Addiction
- DMT: The Spirit Molecule: A Doctor's Revolutionary Research into the Biology of Near-Death and Mystical Experiences
- Destiny of Souls: New Case Studies of Life Between Lives
- America Before: The Key to Earth's Lost Civilization
Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.
About this listen
Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep is book 1 of Sleep Frequencies Audio Lab's Sleep Frequencies for Nervous System Regulation series: a 15.8-hour unabridged recording, read by Marius D. Tennant, released December 20, 2025, on the Medicine & Naturopathy and Disorders & Diseases shelves.
The listen at a glance
- Length
- 15.8 hrs
- Narrated by
- Marius D. Tennant
- Released
- December 20, 2025
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Medicine & Naturopathy, Disorders & Diseases
- Series
- Sleep Frequencies for Nervous System Regulation #1
- ISBN
- 4069829304986
How to listen to Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep free
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Start listening freeQuestions listeners ask
How long is the Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep audiobook?
Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep runs 15.8 hours unabridged. At 1.5× speed that drops to roughly 10.5 hours.
Is the Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep?
Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep is narrated by Marius D. Tennant.
Is Ultra-Low Delta Waves – Sleep Frequencies for Nervous System Regulation: Soundscapes for Deep Sleep to Support Melatonin Production, Ease Stress, Promote Tranquility, and Encourage Restorative Sleep worth listening to at 1.5× speed?
At 1.5× you'd finish in about 10.5 hours, saving 5.3 hours.