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Welcome

INNER SOUND is not about listening to sound or music. It’s about listening to yourself.

  • ​ A Path Inward: Shift your focus from external sound to your body's unique internal resonance.

  • Ease Tension: Let precision-tuned frequencies gently invite deep-seated tension in the body and mind to soften and release.

  • Create Space to Settle: Create a quiet, neutral space where your attention can rest and your body can settle into stillness.

Precision-Crafted Sound Therapy Since 1998

  • INNER SOUND tuning forks are designed to be used in pairs at the head to facilitate deep, rapid relaxation for both humans and animals.

  • ​Made in the USA: Precision-crafted from high-grade aluminum alloy, in full and selected smaller sets.

  • Deep Resonance: Creates a full, even wave of expansion and contraction that most people find deeply calming.

INNER SOUND tuning fork logo showing infinity symbol on its side with 2 forks mounted on it
MASTER THE ART OF SOUND THERAPY
  • Our Basic & Advanced Training provides the essential knowledge and practical skills needed to maximize the therapeutic potential of INNER SOUND tuning forks.

  • Professional & Personal Growth: Learn to seamlessly integrate tuning forks into relaxation practices, complementary therapies, or your daily personal wellness routine.

  • Purpose-Built Frequencies: Every frequency and fork number in the INNER SOUND system was developed by Jack Wilken over more than two decades of practice, and each is documented and reproducible.

  • Expert-Led Curriculum: Course content is developed by Arden Wilken, co-founder of INNER SOUND and co-creator of the INNER SOUND tuning fork method, bringing decades of hands-on experience directly to you.

Short demo of INNER SOUND Tuning Fork Session with Set of 13 showing practitioner holding 2 tuning forks, activating them and bringing the pair up to the ears and then away.

Client Feedback

"I'm always tense, and have trouble relaxing even when I'm in a sound therapy session. As soon as the forks came to my ears, I just zonked out."
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Student/Practitioner Feedback

"I'm a massage therapist. I find my clients relax more quickly and allow me to go deeper if I use the tuning forks before a massage. I don't have to work so hard." Massage therapist, INNER SOUND Practitioner & Instructor, Nevada.

Register for our Tuning Fork Classes

  • 2026 BASIC: Oct 17 & 18 / ADV: Oct 24 & 25. 9am-1pm each day PST via Zoom/Instructor Arden Wilken


    Starts Oct 17

    335 US dollars

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  • 2026 BASIC: Oct 17 & 18 ADV: Oct 24 & 25. 9am - 1pm each day PST via Zoom/Instructor Arden Wilken


    Starts Oct 17

    265 US dollars

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  • 2026 BASIC: Oct 17 & 18. 9am - 1pm each day PST via Zoom/Instructor Arden Wilken


    Starts Oct 17

    175 US dollars

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  • 2026 Advanced: Oct 24 & 25. 9 am - 1 pm each day PST via Zoom/Instructor Arden Wilken


    Starts Oct 24

    175 US dollars

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Purchase Tuning Forks

Prices are + shipping 

We ship anywhere in the US, including Alaska & Hawaii, and overseas.

For international orders, please contact us at arden@innersoundonline.com or

WhatsApp 1 (206) 618-3985 for a shipping quote.

(Sets come with a pouch, wooden hammer and rubber activator as shown)

Inner Sound products are never discounted; our published retail price is the price. We invest in accessibility through training discounts and practitioner pricing instead.

Frequently asked questions

Care & Maintenance of Tuning Forks

•  Store in a dry location without touching (in pouch) / avoid dropping

•  Activate on rubber, or with wooden hammer for group work, not on body

 

 

•  Use at room temperature (68 degrees F/20 degrees C ) /

tuning forks should feel slightly cool to the touch when you use them

•  Use 220 grit sandpaper for any discoloration (oxidation) spots They do not affect the effect of the tuning forks, being cosmetic discoloration only

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Tuning Forks will last a lifetime if well-maintained

man with a hammer in right hand hitting his right temple
the 2 balls at end of a weighted showing corrosion/oxidation
don't hit tuning forks on your body

How to apply
INNER SOUND Tuning forks 

Image by Fineas Anton

Studies

From Practitioner Submissions
 

Since 2002, our practitioners have recorded how clients rate their pain and stress before and after a session. Most clients report lower numbers afterward. These are self-reported ratings collected in practice rather than results from a controlled study, and we are currently having the full record analysed properly. We will publish what it shows.

Image by Dan Dimmock

More Tuning Fork Practitioner Feedback 

"I had the opportunity to use several pairs from the full Set of 13 for a group of rescue rabbits that have been stressed due to a recent loss of another rabbit. It was amazing. They all came out of their boxes and laid down & stretched out. The one I had worked on before the group session was in the middle pen, & every time I walked back and forth he would to try and get closer to the sound. It was awesome!"

Purity = rapid, deep relaxation

Oscilloscope pure 5th.jpg
INNER SOUND tuning forks are tuned twice for unparalleled precision. When utilized in pairs, this accuracy facilitates profound and swift relaxation. Each pair is a true fifth — the higher fork vibrating exactly three times for every two of the lower. Tuned pure rather than approximately, the two tones lock together instead of wavering against each other. Most people find that steadiness makes it easier to settle and relax.
Our tuning forks offer a level of precision that other forks don't match. Take a look at the visual difference between the two oscilloscope waveforms: the top showcases pure 5ths, while the bottom reveals less clarity. Experience the tranquility that comes from our tuning forks.
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