Roughly what each range is for — so you can choose a room or a custom pulse instead of guessing.
4 – 4.5 Hz
Deep theta
Sleep threshold, a heavy body, mending rest. Night Descent and Cold Ease live here. Use when you want to drop, not think.
5 – 5.5 Hz
Low theta
Hypnosis and body unguarding. Nerve Ease, long healing sits. Use for sciatica, trapped nerves, or when the animal needs to stand down.
6 – 6.5 Hz
Mid theta
The middle of the house. Head Ease, Sinus Ease, much of the anxiety path. Use for a tight head, facial pressure, or a chest that will not unhook.
7 – 8 Hz
Upper theta
Quiet attention without climbing into work-mind. Twilight Focus, creative flow, carrying calm into the day.
8 – 10 Hz
Theta–alpha border
Softer alertness. Some people ease a headache here. Still rest — not a substitute for beta focus, and not medical advice.
These numbers are a climate, not a prescription
Binaural beats are named by the difference between the two ears. Four hertz in the left-right gap is a four-hertz pulse, whatever the carrier pitch. The bands below are a folk map used in this house. People vary. If 6 Hz feels busy, go lower. If 4 Hz makes you foggy when you needed a little spine, go up.
Headphones for binaural rooms. Start in the range that matches the job, sit once, and notice the jaw, the breath, the chest — not a vision. This is not medical advice.
How to choose
Need sleep, illness-rest, or a body that will not drop? Begin at 4 to 4.5. Need a nerve or a long unclenching? 5 to 5.5. Head, sinuses, ordinary anxiety? 6 to 6.5. Want to stay present, create, or carry quiet into the day? 7 to 8. The custom tuner in Circle lets you sit between the named rooms.
Match the room to the map when you can: Cold Ease is deep theta, Nerve Ease is low, Head Ease and Sinus Ease are mid, Twilight Focus is upper. You do not have to remember the numbers if you remember the rooms.