The small, lightweight A1 features one of the most dynamically powerful and accurate drivers ever developed.

Delivering an incredible range with stunning clarity, this single driver in-ear monitor is perfect for anyone wishing a discreet and comfortable way to enjoy live-concert quality with a canal-molded monitor. Custom fabricated of soft silicon, the A1 provides up to 27 dB of outside noise reduction. You hear the music not the background. And because the flexible shell quickly warms to your body temperature, it expands to give a perfect fit all the time. Clarity, power and comfort combine to offer a truly enjoyable listening experience.

Each pair of Custom Series In-Ear Monitors is handmade by ACS to fit perfectly in your ear. You will need to visit one of our qualified audiologists who will create a unique impression of each of your ears, a very simple process that will only take 5 minutes.

Your impression will be delivered to our audio artisans who will handcraft your unique Custom Series In-Ear Monitors and forward them to you in less than 21 days. We work very closely with a network of professional audiologists to ensure our exact specifications and your ultimate satisfaction and comfort.