ACS Custom is a UK-based hearing technology company with over 30 years of expertise dedicated to protecting and enhancing the way the music industry experiences sound. We design and manufacture industry-leading Custom and Universal In-Ear Monitors (IEMs) and custom hearing protection trusted by musicians, engineers, venues, festivals, and production professionals around the world. Music is at the heart of everything we do. For decades, ACS has supported artists at every stage of their careers, from emerging performers playing their first gigs to internationally touring musicians performing on some of the world’s biggest stages.
Our range of custom and universal In-Ear Monitors has been developed specifically for professional performance environments, delivering exceptional clarity, detail, and reliability on stage and in the studio. Handcrafted in the UK using our signature soft medical-grade silicone technology, ACS IEMs offer superior comfort, isolation, and a secure fit, allowing musicians to perform with confidence while reducing exposure to harmful noise levels.
Alongside our monitoring technology, ACS is globally recognised for its PRO Custom Earplugs. Designed with advanced linear attenuation filters, they reduce volume evenly across all frequencies, allowing musicians, crew members, and music fans to experience live sound naturally while significantly reducing the risk of long-term hearing damage.Drummers, in particular, face some of the highest levels of sound exposure in live performance environments.
Through innovative products, education, and industry partnerships, ACS is committed to helping percussionists build sustainable careers without sacrificing their hearing health.Beyond our products, we actively work across the wider music ecosystem to champion safer listening. ACS partners with festivals, venues, artist communities,and educational organisations to raise awareness around hearing conservation and encourage positive conversations about hearing health among the next generation of performers.By combining over three decades of audiological expertise with British manufacturing and a deep understanding of live performance, ACS continues to shape the future of hearing protection and in-ear monitoring—helping musicians create, perform, and experience music with confidence for years to come.
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