Zen Vibrational Therapy Forks Otto Series Weighted 3 Set Tuning Forks

Rooted in deep resonance and physical connection, the Zen Vibrational Therapy Forks offer a powerful, body-centered approach to sound therapy. This Otto Series set includes three weighted tuning forks specifically designed to deliver low-frequency vibrations that are felt more than heard—ideal for grounding, releasing tension, and restoring balance at a deeply physical level.

The name Otto comes from osteophonic, meaning “bone-vibrating.” Otto forks are weighted tuning forks engineered to transmit vibration directly into the skeletal system and surrounding tissues. Their added weights create slower, deeper frequencies that travel efficiently through bones and connective tissue, making them especially effective for relaxation, pain relief, nervous system balancing, and stimulating healthy circulation.

In sound therapy practice, weighted tuning forks are used directly on the body to bring vibration into bones, joints, muscles, and organs. The sustained low-frequency resonance encourages release of tension, supports circulation, and promotes a calming parasympathetic response. Simply strike the fork and gently place its stem on areas of tension, acupressure points, joints, or along the spine to deliver focused, restorative vibration exactly where it’s needed.

Together, these forks offer a holistic toolkit for vibrational therapy—perfect for bodyworkers, massage therapists, sound therapy practitioners, and anyone looking to integrate intentional vibration into hands-on wellness practices. Their subtle yet powerful frequency range works beneath the surface, supporting both physical regulation and energetic balance with a grounded, deeply felt approach.

Each tuning fork in this set is carefully calibrated to resonate at specific frequencies. The set includes:

1 Otto 32 tuning fork (approximately C32 Hz)

1 Otto 64 tuning fork (approximately C64 Hz)

1 Otto 128 tuning fork (approximately C128 Hz)

1 rubber mallet

Soft black protective case

Tuning Notes:

Otto 32 fork: Approximately C32 – deeply penetrating, supportive for fascia, connective tissue, and grounding energy into the Earth

Otto 64 fork: Approximately C64 – ideal for spinal energy flow, root chakra activation, and trauma release work

Otto 128 fork: Approximately C128 – deeply grounding and calming, often used for muscle relaxation, joint pain, and structural alignment

Dimensions:

Otto 32 fork: Approximately 12.25" x 2"

Otto 64 fork: Approximately 10.5" x 1.75"

Otto 128 fork: Approximately 8.75" x 1.5"

Total set weight: 565 grams

Each tuning fork has Otto 32, Otto 64, and Otto 128 engraved on them for easy reference.

Please note: The sound you hear at the moment of striking does not reflect the actual tone of the tuning fork. Due to its low frequency, the true vibration may be difficult to detect through traditional speakers. For the most accurate listening experience, we recommend using quality headphones.

Sound 1 is a sample of the Otto 32 tuning fork. Sound 2 is a sample of the Otto 64 tuning fork. Sound 3 is a sample of the Otto 128 tuning fork.

Photos and audio samples are for reference only. The exact appearance and sound of your tuning forks may vary slightly, but will be representative of the quality, craftsmanship, and tonal characteristics typical of this product.