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The ACS range of In-Ear Monitors (IEM's) offers the perfect solution for musicians and music lovers alike. The sound quality of our IEM’s is second to none, while our range offers products to suit all requirements. Our custom made models are made using soft silicone, so as well as fitting perfectly they are the most comfortable IEM’s around.

Choose from our Custom IEM range for all round use, or our Custom Live! IEM range for the added feature of ambient sound. Whether you’re in the studio, on stage or just listening to music, ACS has an In-Ear Monitor that’s perfect for you.

All of our IEM's proudly feature Knowles© balanced armature drivers to ensure reliability and performance.

Live Custom In-Ear Monitors


ACS Live! Custom in-ear monitors give you the best of both worlds - High fidelity sound with a perfect, comfortable fit, plus the ability to hear your surroundings at a level you control. Combine our Live! Series IEM's with the ACS Ambient Processor and take your performance to another level!

Custom In-Ear Monitors

ACS Custom in-ear monitors are all about the high fidelity listening experience. Custom fit soft silicone ear moulds create a perfect seal and comfortable fit, combined with state of the art speakers, patent-pending and exclusive technology and our own proprietary crossovers to ensure you are hearing the music as it was intended to be heard.