Sound­less Oy

Soundless Ltd is a Finnish technology company focused on pushing the boundaries of active noise cancelling. We are dedicated to creating solutions that help people sleep better, live better and feel better in places where silence matters the most.

QuietOn 4, launched in 2025, is our flagship product and the world’s smallest ANC earbud made for sleep. Compact, wireless, and created for comfort, it delivers quiet in even the noisiest environments, from city nights to shared bedrooms.

Poor sleep is one of the most significant and underaddressed health challenges globally. Noise disturbance from snoring partners, urban environments, shift work, and travel is among the leading causes of disrupted sleep. Conventional earplugs fail to address low-frequency sounds where the problem is most acute.

QuietOn 4 is the world's smallest ANC sleep earbud compact enough that it does not press against the pillow, making it the only viable option for side sleepers. And unlike virtually all competitors, it requires no Bluetooth, no app, and no setup. For a product worn during sleep, that simplicity is a meaningful clinical and usability advantage.

Most competitors rely on sound masking — playing white noise or ambient audio to distract from disturbance. QuietOn uses active noise cancellation to eliminate noise at source, particularly low-frequency sounds like snoring and traffic that foam earplugs cannot touch.