A new sleep tech startup is betting that the next meaningful wearable may not sit on the wrist, but in the ear.
SOND, a Boston-based company founded by MIT graduates Yadid Ayzenberg and Amir Lazarovich, has emerged from stealth with $7 million in funding and its first product: Dreambuds, intelligent sleep earbuds designed to monitor the body overnight and respond in real time.
Unlike many sleep wearables that primarily collect data and deliver a report the next morning, SOND describes Dreambuds as a closed-loop system. The earbuds capture physiological signals during sleep, including respiration, heart rate variability, body position, snoring, sleep staging and seismocardiography, then use that information to adapt audio interventions while the night is still unfolding.
The company’s pitch is simple: people do not just need more sleep data. They need help while sleep is actually happening.
From sleep tracking to sleep intervention
Dreambuds are led by Ayzenberg, SOND’s CEO and Bose’s former head of sleep products. At Bose, he worked on the Sleepbuds line, a category built around small earbuds for nighttime comfort and noise masking. SOND appears to be trying to push that category further, from passive sleep audio toward active sleep coaching.
According to TechCrunch, SOND’s $7 million investment includes backing from E14 Fund, Crosslink Capital, Ubiquity Ventures, Alumni Ventures, Meach Cove Capital, and Boston Scientific co-founder John Abele.
The product connects to an AI sleep coach that can select from SOND’s library of more than 500 audio programs or generate new sleep audio on demand. Users can also speak to the coach directly to ask for sleep insights or request a particular sleep program. Over time, the system is designed to learn which interventions work best for each person.
A phone-free sleep routine
One of the more interesting design choices is the charging case. Rather than making the phone the main control surface, Dreambuds’ case includes Wi-Fi, Bluetooth, an OLED display, physical buttons and a speaker. The case can help run the sleep routine and sound an alarm, even if the user falls asleep before putting in the earbuds.
That matters because bedtime technology often creates its own problem: the moment users pick up a phone to adjust a sleep app, they are back inside a device designed for attention, notifications and scrolling. SOND’s case-first approach is an attempt to keep the sleep workflow separate from the smartphone.
Dreambuds owners will still be able to review data through a companion app, including sleep-cycle graphs and nightly insights. But the core control loop is meant to operate with less phone dependence.
What is still unproven
The ambition is clear, but the category is still early. SOND will need to show that its interventions meaningfully improve sleep, that users are comfortable wearing sensor-packed earbuds all night, and that its AI coaching feels useful rather than intrusive.
The company says Dreambuds are designed for overnight comfort, including side sleepers, and lists features such as real-time sleep stage detection, biometric insights from 12 physiological signals, smart noise masking, active noise cancellation and all-night battery life. Those claims will matter most once more users have lived with the device beyond beta tests and comfort studies.
For now, the product is not broadly available. SOND is taking $1 early-access reservations that it says will give holders priority access to Kickstarter launch pricing. The company lists a planned early-supporter price of $449, compared with an expected retail price of $650, but notes that the reservation is not a product purchase, preorder or Kickstarter pledge.
For the broader longevity and healthspan market, Dreambuds point to a larger shift in wearables: from passive measurement to active intervention. Smart rings and watches made sleep scores mainstream. SOND wants the earbud to become part sensor, part audio system and part coach.
If the company can deliver on that promise, Dreambuds could become an early example of a new sleep wearable category: not just a tracker, but a device that tries to improve sleep while the user is still asleep.
Read more from the primary sources: TechCrunch, SOND and the Dreambuds reservation page.