What does Hz mean?
Hertz counts vibration cycles each second: 128 Hz means 128 cycles. Frequency describes pitch, not loudness. A higher number does not mean a stronger or more effective wellness tool.
BioSonics Platform
Frequency Guide
Search core BioSonics frequency families, education notes, and related product paths for a stronger content and SEO foundation.
Frequency Education
Learn About BioSonics Tuning Fork Frequencies
The guide gives BioSonics a structured place for Body Tuners, Otto Tuners, Crystal Tuners, planetary tuners, audio examples, class handouts, and product recommendations.
Understand the sound before choosing a fork
Feel or listen?
Weighted forks have added mass at the tips and emphasize vibration felt through the handle. Unweighted forks emphasize audible listening. Compare the instrument’s design as well as its frequency, and follow its own instructions.
Explore musical relationships
The BioSonics C256 and G384 pair forms a 3:2 frequency ratio—a perfect fifth. Doubling a frequency creates an octave. These relationships explain musical intervals; they do not establish a medical effect.
Explore Body TunersUnderstand planetary systems
Some systems translate astronomical cycles into audible pitches through repeated octave doubling. Chakra associations are spiritual interpretations, and mappings vary between systems. They are not measured frequencies of organs or a universal prescription.
Explore planetary tuner educationStart your practice
How to use tuning forks
Begin with gentle listening. Follow the instructions supplied with your specific fork, especially for weighted forks and accessories.
Hold the handle
Keep the prongs free so they can vibrate. Sit comfortably in a quiet space.
Activate gently
Use a light tap on a purpose-made rubber activator. Avoid hard surfaces and excessive force.
Listen comfortably
Keep the fork away from your ear and bring it closer only while the sound stays comfortable. Never place it in the ear.
Pause and care
Let the sound fade before repeating. Stop if uncomfortable, then wipe the fork with a soft cloth and store it securely.
Using vibration on the body? Weighted forks require their own technique. Follow the product instructions or learn with a qualified instructor. Avoid injured, inflamed, or sensitive areas, and seek medical guidance for symptoms or a health condition.
Which tuning forks should I choose?
Choose by the experience you want to explore. These are starting points for personal wellness and sound practice, not prescriptions for different illnesses.
First-time learning
Body Tuners C256 & G384
A starting pair for exploring two tones, musical intervals, and attentive listening.
Explore Body TunersQuiet relaxation
Otto 128 — weighted
Consider this fork if you prefer a low tone and want to learn a weighted-fork practice. Follow its specific handling instructions.
Explore Otto 128Meditation & listening
Body Tuners C256 & G384
Use the tones as an optional focus for a quiet listening routine. Choose whichever sound feels comfortable to you.
Read the Body Tuner guideCrystal-based practice
Crystal Tuner 4096
For people interested in learning crystal-tuner techniques and compatible accessories. It is a higher-pitched option; activate lightly.
Read the Crystal Tuner guideFrequency meanings: choosing a listening intention
The following reference adapts the frequency list from the supplied Sound Healing Frequencies chart. It describes the chart’s associations, not proven “best frequencies” for health conditions. Choose a comfortable sound and a personal intention; an association is not a promised result.
Brainwave ranges are different from tuning-fork pitches
The low ranges below describe electrical brain rhythms. They are not interchangeable with the pitch of a tuning fork, and listening to a tone with the same number does not guarantee that brain state. Range boundaries vary between sources.
| Chart range | Context |
|---|---|
| 0.5–4 Hz | Delta-range activity is associated with deep sleep; this is not a frequency prescription for sleep or “subconscious reprogramming.” |
| 4–8 Hz | Theta-range activity occurs in contexts including drowsiness. Meditation and creativity are themes in the chart, not guaranteed effects of a fork. |
| 8–14 Hz | Roughly overlaps the alpha range, commonly seen during relaxed wakefulness with eyes closed. It does not establish learning enhancement. |
| 14–30 Hz | Roughly overlaps beta activity seen during wakefulness. A matching sound is not established to improve problem-solving. |
| 40 Hz | Gamma-frequency sensory stimulation is being researched, including in Alzheimer’s disease. Research protocols are not equivalent to a 40 Hz tuning fork and do not establish it as a treatment. |
Chart-based listening and meditation themes
Chakra names below describe spiritual symbolism in the chart. They are not instructions to place a vibrating fork on the head, throat, an injury, or any other body location.
| Frequency | Listening intention | How to interpret it |
|---|---|---|
| 111 Hz | Spiritual contemplation | The chart links this to sacred or temple experiences; this is not a demonstrated therapeutic effect. |
| 136.1 Hz | Om-themed meditation | A symbolic listening focus for an Om practice; no specific health outcome is established. |
| 144 Hz | Symbolic alignment | The chart’s cellular alignment and DNA activation claims are not established medical benefits. |
| 174 Hz | Grounding and relaxation | A possible personal listening intention, not an established pain treatment. |
| 285 Hz | Restorative intention | The chart’s tissue repair and regeneration claims are not established medical benefits. |
| 396 Hz | Reflection on fear or guilt | An optional reflective theme; not a treatment for trauma or an anxiety disorder. |
| 417 Hz | Creativity and emotional reflection | The chart associates it with the sacral chakra; interpret this symbolically. |
| 432 Hz | Calm listening | The chart associates it with relaxation and clarity; it is not established as uniquely beneficial. |
| 528 Hz | Love and transformation | Use as a symbolic meditation theme; DNA repair is not an established effect. |
| 639 Hz | Connection and relationships | The chart associates it with the heart chakra; not a guaranteed emotional-healing result. |
| 741 Hz | Intuition and self-expression | A symbolic throat-chakra theme; detoxification is not an established effect. |
| 777 Hz | Spiritual reflection | A symbolic theme of alignment or wisdom, not a medical outcome. |
| 852 Hz | Awareness and contemplation | The chart’s third-eye association is spiritual symbolism, not a physiological claim. |
| 888 Hz | Abundance-themed reflection | Prosperity and energy are symbolic themes; physical regeneration is not established. |
| 963 Hz | Spiritual connection | A symbolic crown-chakra or enlightenment theme, not a demonstrated healing effect. |
Choosing a BioSonics fork: The Body Tuners and Otto recommendations above are based on instrument type and practice style. They are not substitutes for the chart’s other frequencies. Check the actual frequency marked on the product and follow its own instructions.
Further reading: American Epilepsy Society: normal EEG rhythms · NIA: ongoing Alzheimer’s research · NCCIH: music and health
What about healing specific conditions?
These recommendations do not establish that a particular tuning-fork frequency treats pain, anxiety, sleep disorders, or other conditions. Research on music-based interventions cannot automatically be applied to individual tuning forks. Use this guide for wellness education alongside appropriate healthcare.
Read NCCIH's overview of music and healthExplore the instruments
BioSonics tuning fork chart
Compare core BioSonics forks from low to high. Open a product photo to shop; hover over or open “Practice uses” for wellness and spiritual associations.
Notes are the nearest equal-tempered pitch at A4 = 440 Hz, not exact tuning equivalents. BioSonics C256/G384 instruments use a different reference. Set photos show the complete set, not a separately sold fork.
32 Hz
≈ C1
Otto 32
Weighted
Practice uses for Otto 32
Grounding and gentle tactile awareness. Follow the Otto 32 instructions; bone-healing claims are not established.
64 Hz
≈ C2
Otto 64
Weighted
Practice uses for Otto 64
Body-focused relaxation practice. Not an established treatment for spinal, hip, or muscle conditions.
128 Hz
≈ C3
Otto 128
Weighted
Practice uses for Otto 128
Tactile relaxation and body awareness. Pain relief and nervous-system regulation are not guaranteed medical effects.
136.1 Hz
≈ C♯3
OM Tuner
Weighted
Practice uses for OM Tuner
Meditation and heart-centered reflection. Chakra associations are spiritual interpretations.
256 Hz
≈ C4
C256 Body Tuner
In a 2-fork set
Practice uses for C256 Body Tuner
Attentive listening and exploring the C–G interval. A useful starting point for learning; no condition-specific outcome is established.
384 Hz
≈ G4G384 Body Tuner
In a 2-fork set
Practice uses for G384 Body Tuner
Companion to C256 for interval listening and a quiet meditation routine.
396 Hz
≈ G4
Solfeggio 396
In a 6-fork set
Practice uses for Solfeggio 396
Reflection on fear and guilt as a personal intention, not treatment for an anxiety disorder.
417 Hz
≈ G♯4Solfeggio 417
In a 6-fork set
Practice uses for Solfeggio 417
Reflection on change and emotional patterns. Not an established trauma treatment.
528 Hz
≈ C5Solfeggio 528
In a 6-fork set
Practice uses for Solfeggio 528
Love and transformation as meditation themes. DNA or cellular repair is not established.
639 Hz
≈ D♯5Solfeggio 639
In a 6-fork set
Practice uses for Solfeggio 639
Contemplation of connection and relationships; a symbolic intention rather than a promised result.
741 Hz
≈ F♯5Solfeggio 741
In a 6-fork set
Practice uses for Solfeggio 741
Self-expression and communication themes. Detoxification is not an established effect.
852 Hz
≈ G♯5Solfeggio 852
In a 6-fork set
Practice uses for Solfeggio 852
Intuition and inner reflection in spiritual practice.
4096 Hz
≈ C8
Crystal Tuner Earth
Unweighted
Practice uses for Crystal Tuner Earth
Crystal-based listening and contemplative practice. Follow the specific accessory instructions.
4096 Hz
≈ C8
Angel Tuner 4096
In a 3-fork set
Practice uses for Angel Tuner 4096
High-tone contemplation and symbolic space-clearing. Not demonstrated removal of negative energy.
4160 Hz
≈ C8Angel Tuner 4160
In a 3-fork set
Practice uses for Angel Tuner 4160
Spiritual reflection and attentive listening; aura balancing is a symbolic association.
4225 Hz
≈ C8Angel Tuner 4225
In a 3-fork set
Practice uses for Angel Tuner 4225
A bright tone for personal contemplative practice. Improved cognitive function is not an established result.
These uses describe practice intentions, not proven treatments. Choose a comfortable volume and follow the product instructions. For persistent symptoms, seek appropriate healthcare.
Frequency & practice context
Low-frequency weighted tuners
Weighted forks produce a vibration that can be felt through the handle during appropriate contact. Sound-healing practitioners use them in body-focused relaxation practices. Frequency alone does not establish an effect on a particular tissue or condition.
- 32 Hz: Associated in the supplied reference with grounding and deep-body work. This is not evidence of bone healing; use the BioSonics 32 Hz instructions rather than a generic placement chart.
- 64 Hz: Associated with body relaxation and spine/hip-focused practices. This is not a recommendation to treat spinal or muscle conditions.
- 128 Hz: Commonly chosen for tactile relaxation practices. Claims of joint-pain treatment or nervous-system regulation are not established benefits of this product.
- 136.1 Hz OM: A separate weighted meditation option associated with heart-centered reflection. Chakra balance is a spiritual interpretation.
Use gentle activation and the product-specific instructions. Avoid injured or sensitive areas. Persistent pain or other symptoms need appropriate healthcare assessment.
Solfeggio listening intentions
These associations describe contemporary sound-healing and spiritual practices. They do not establish that tones remove biofield blockages or treat emotional or physical disorders.
- 174 Hz: Grounding and a relaxation intention; not an established natural anesthetic.
- 285 Hz: A symbolic restoration theme; tissue regeneration is not established.
- 396 Hz: Reflection on guilt and fear.
- 417 Hz: Reflection on change and emotional patterns; not trauma treatment.
- 528 Hz: Love, transformation, and clarity as personal intentions; cellular repair is not established.
- 639 Hz: Reflection on connection and relationships.
- 741 Hz: Self-expression and communication; detoxification is not established.
- 852 Hz: Intuition and inner reflection as spiritual themes.
- 963 Hz: Higher-consciousness and crown-chakra symbolism.
What is in the BioSonics set? The six-fork set contains 396, 417, 528, 639, 741, and 852 Hz. The additional 174, 285, and 963 Hz entries above are context from an expanded system, not included forks.
High-frequency listening and Angel Tuners
Frequencies around 4096 Hz and above are associated in some sound-healing practices with space-clearing rituals, aura symbolism, and contemplative attention. These are spiritual or personal intentions, not demonstrated removal of negative energy or guaranteed cognitive benefits.
BioSonics Angel Tuners and the Crystal Tuner are distinct products; a shared frequency range does not make the products or their instructions interchangeable. Use a gentle strike, comfortable listening distance, and each product’s own guidance. Do not apply a high-frequency fork to the head based on a general chart.
Practice context adapted from the supplied reference; it is not clinical evidence. Read NCCIH’s music and health overview. .
BioSonics reference library
Connect frequencies to instruments and education
Search editable BioSonics frequency notes, tuner families, product context, and learning resources.
C256 Body Tuner
Core BioSonics Body Tuner frequency context for product education and guided selection.
Crystal Tuner 4096
Crystal tuner education entry for crystal accessories, wands, and related resources.
G384 Body Tuner
Companion Body Tuner context for shoppers comparing C and G product education.
Otto 128
Weighted Otto tuner education entry for product family and use-case comparison.
Planetary Tuners Overview
Structured starting point for planetary tuner families and related product categories.
Interactive listening lab
Hear the spectrum. Explore how sound feels.
Move through audible frequency ranges, compare BioSonics references, and discover the grounding, reflective, meditative, and clarity-focused traditions connected with each part of the spectrum.
Wellness education, not medical treatment
Frequency-specific healing claims have not been established clinically. Use these tones as short listening, meditation, and product-education cues. The browser preview starts at 100% of its controlled tone level, so lower your device volume before pressing Play and stop if you notice discomfort, ringing, or fatigue.
Current frequency
Wave shape
Associated BioSonics instrumentView tuning fork
Choose a frequency, then press Play tone.
Selected range
Midrange
Centering and focused listening
Listening experience
Traditional wellness context
Practical note
Try this
Listen for 10-20 seconds, pause, and notice tone, vibration, attention, and emotional response without trying to force an outcome.
Frequency shortcuts
Select a familiar reference, then play it at a comfortable device volume.
How to read the wellness language
“Traditionally associated with” describes cultural, musical, or contemporary sound-wellness use. It does not mean that a pure tone at that frequency diagnoses, cures, or treats a disease. Research on music-based interventions studies broader musical experiences and professional music therapy, not a universal medical effect from one number.
Listen safely
Loudness and exposure time matter more for hearing safety than the number shown in hertz. Keep volume low, take breaks, and never raise high frequencies just to make them audible. Read guidance from the World Health Organization and the National Center for Complementary and Integrative Health.
