10S Guitars is a Chinese custom guitar workshop founded in 2016 by luthier Spring Li, who built his first custom guitar in 2008 before launching the brand. The company operates a small team of luthiers producing both a standard line and fully bespoke instruments, with a stated aim of offering player-friendly guitars without compromising on build quality. Hardware and pickups are typically sourced from Korea, with the shop also offering options from third-party makers such as Bare Knuckle, Seymour Duncan, EMG, Fishman, Floyd Rose, Gotoh, and Hipshot.

The brand's catalog spans vintage-style single-cuts, ST and T-style models, and progressive multi-scale and extended-range builds in 6, 7, 8, and beyond. Notable models include the GF Old Blackie and the HuYang (Mega Soul) HYMM baritone. 10S has also produced one-off project instruments such as a 20-string "DJENTAR" built for YouTuber Stevie T and a Mountain Dew-themed guitar for Jared Dines, which helped raise the brand's profile in online guitar communities.

10s has 9 products cataloged on Equipboard, including Solid Body Electric Guitars, Extended Range Guitars, and Semi-Hollowbody Electric Guitars. Their gear is featured by 9 artists, with the strongest followings in Rock, Metal, and Pop. Notable users include Steve Terryberry, Matt Heafy, and Ichika.