Advsound (ADV.) manufactures high-fidelity earphones, in-ear monitors, and true wireless audio products designed with a focus on optimal fit and consistent sound.
Advsound, commonly known as ADV., is a consumer electronics brand specializing in high-performance audio equipment. Based in Great Neck, New York, the company operates under the 'Fit-First Sound' philosophy, delivering earphones, in-ear monitors (IEMs), and true wireless earbuds that prioritize optimal fit, improved seal, and consistent sound quality for real-world application. Their product lineup includes specialized models like the ADV True Wireless On-Ear Headphones and the Sleeper TWS Earphones, built for both professional musicians and everyday listeners.
ADV. strongly stands behind its engineering with a robust 3-year limited warranty on most of its products. Known for pushing the boundaries of acoustics and ergonomics, Advsound also encompasses sub-brands such as Eartune and NSMO, bridging the gap between custom-fit fidelity and everyday usability.
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ADV. warrants its products against defects in material and workmanship for three years from the date of original purchase. It does not cover accidental damage, misuse, or unauthorized modifications.
Open the charging case, turn on Bluetooth on your smartphone, and select 'ADV. SLEEPER TWS' from the device settings. If you have issues, return the earbuds to the case, close it, and retry.
You can email customer service at support@adv-sound.com for assistance or warranty service. If purchased outside the US, contact your local distributor.
Most Advsound True Wireless earbuds take approximately 1 hour to fully charge using a standard USB-C cable or compatible wireless charging pad.