Hz Hub: Your Portable Companion for Stress Reduction, Enhanced Focus, and Restful Sleep. For Meditation, Sleeping, Yoga, Study, Baby, Adult, Office & Relaxing. Harness the power of Solfeggio frequencies and white noise to transform your environment into a sanctuary of tranquility and/or concentration. Soothe your senses. Experience the Benefits of Solfeggio Frequencies: Solfeggio frequencies have been associated with various benefits, including stress reduction, improved focus, and enhanced sleep quality. For instance, a study found that exposure to 528 Hz music significantly reduced stress in participants. Transform your daily routine with the Hz Hub, designed to support your well-being through the power of sound.