O.S Acoustics is a British loudspeaker manufacturer based at Bournemouth International Airport in Christchurch, England, founded in 2015 by Tom Osborne. The company specializes in high-end linear phase active studio monitors that are designed, built, and hand-finished in-house, combining class-D amplification with FIR filtering aimed at minimizing time-domain and phase distortion.

The range centers on two reference nearfield monitors: the DB7, a ported two-way design, and the DBS8, a sealed mid-tweeter-mid (MTM) configuration positioned as the company's flagship. Both models are built around Pascal T-Pro2 class-D amplifier modules with Advanced UMAC technology and use DSP-driven linear phase FIR filters to deliver constant group delay across the audio band.

The brand has built a niche reputation among mastering and mixing engineers in the UK and Europe, with reviews in publications such as Sound on Sound and Studio Magazin, and is distributed through professional audio retailers including Absolute Music.

OS Acoustics has 2 products cataloged on Equipboard, including Active & Passive Monitors. Their gear is featured by 1 artist, with the strongest followings in Electronic. Notable users include The Crystal Method.