What it is

The healing power of frequencies.

Sound frequency work is part of how Denver Zen Den builds a session: sound waves and tones chosen to support relaxation, focus, and emotional balance. We integrate the tradition and the science of sound healing so a session resonates with your body and mind, not just your ears.

Everything in the universe vibrates at its own frequency, including the human body. When stress, illness, or emotional strain show up, that vibration can feel disrupted. Sound-healing tradition holds that specific sound waves can help restore a sense of harmony and balance, alongside relaxation, focus, and emotional resilience. That's a tradition-informed idea, not a clinical claim, and we treat it that way.

Sound doesn't fix you. It gives your nervous system somewhere to land.

Sound-healing tradition

Frequencies commonly used in sound-healing practice.

These associations come from sound-healing tradition, carried forward through practitioners and teachers rather than clinical trials. We share them as context for what you may hear during a session, not as guaranteed effects.

396 Hz: often described as supporting the release of tension and a calmer nervous system
432 Hz: associated in sound-healing tradition with mental clarity and concentration
528 Hz: associated with restfulness and easier sleep
639 Hz: associated with connection and empathy
174 Hz: associated with a sense of physical ease and relaxation

What's documented

Brainwave states, in plain terms.

Separate from frequency tradition, brainwave states are a measured, well-documented part of neuroscience: the rhythmic electrical activity your brain produces, tracked in cycles per second (Hz) on an EEG.

Delta (0.5 to 4 Hz): deep sleep and restoration, the deepest stages of non-REM sleep where the body repairs and regenerates
Theta (4 to 8 Hz): meditation, creativity, and intuition, present during light sleep, dreaming, and meditative states
Alpha (8 to 14 Hz): relaxed focus, the bridge between active thinking and restful relaxation
Beta (14 to 30 Hz): active thinking and problem-solving, dominant during alert, logical tasks
Gamma (30 to 100 Hz): heightened awareness, linked to learning, memory, and states often reported by experienced meditators

Worth knowing: a session doesn't force your brain into a given state. Sound and light can support a shift, but your own physiology and mindset lead.

Plan your visit

Where to feel this.

Frequency and brainwave work aren't a stand-alone booking, they're woven through sessions like Sound Science, Stroboscopic Light, and NeuroChant. Start with whichever modality speaks to you and the frequency layer comes along with it.

Duration: See current session lengths →
Price: See current pricing →
What to bring: Comfortable clothing
Recommended: Skip caffeine right before, if you can

Common questions

Before you book.

Is there scientific proof that specific frequencies like 528 Hz work?

Solfeggio frequencies come from sound-healing tradition, not peer-reviewed clinical research. What is well documented is the brain's response to rhythmic sound and light, called entrainment, which several of our sessions are built around. We describe the specific-frequency associations as tradition, not medical claims.

What's the difference between a frequency and a brainwave state?

A frequency is what's played, the sound or pulse rate you hear or feel. A brainwave state is what your brain is doing, measured in Hz on an EEG. Some sessions use sound or light to try to support a shift toward a given state.

Do I need to know anything about music or Hz to benefit?

No. You lie back, breathe, and let the session run. No musical background required.

Can this replace medical or mental health treatment?

No. This is a wellness and relaxation experience, not a substitute for medical or mental health care. If you have a diagnosed condition, talk to your healthcare provider about whether a session is a good fit alongside your treatment.

Is it safe?

Generally problem-free. If your session pairs sound with stroboscopic light, consult a healthcare provider first if you have photosensitive epilepsy, glaucoma, recent eye surgery, a pacemaker, or are in your first trimester of pregnancy.

Where to start

Experience it, don't just read about it.

Frequency work comes alive inside an actual session. A few places to start:

Everything vibrates.
So do you.

The healing power of frequencies.

Frequencies commonly used in sound-healing practice.

Brainwave states, in plain terms.

Where to feel this.

Before you book.

Experience it, don't just read about it.

Come feel what vibration can do.

The healing power of frequencies.

Frequencies commonly used in sound-healing practice.

Brainwave states, in plain terms.

Where to feel this.

Before you book.

Experience it, don't just read about it.

Sound Science

NeuroChant

All Experiences

Come feel what vibration can do.