64 Audio is proud to introduce our newest four driver custom in-ear monitor, A4s. This complete redesign of our four driver platform is elevated by the Dynamic low frequency driver, making this 64 Audio’s second hybrid custom IEM. Along with that major update, inside A4s is our Tia technology, LID and our patented Apex

定制耳塞的问题是缺乏透气性和随后的压力积聚，但这对 A4s 来说不是问题，这要归功于 64 Audio的 apex 技术。 该技术采用模块来控制气压的释放，该模块通过打孔直接连接到 IEM ，因此你不可避免地会失去一些隔音，但 A4 仍然是我佩戴过隔音最好的 IEM 之一 ...

2021年11月12日 · The A4s is the latest hybrid CIEM from renowned IEM company, 64 Audio. Our IEM reviewer Precogvision takes a look at how it stacks up against the competition.

64 Audio is proud to introduce our newest four driver custom in-ear monitor, A4s. This complete redesign of our four driver platform is elevated by the Dynamic low frequency driver, making this 64 Audio’s second hybrid custom IEM. Along with that major update, inside A4s is our Tia technology, LID and our patented Apex and 3Dfit tech.

64 Audio is proud to introduce our newest four driver custom in-ear monitor, A4s. This complete redesign of our four driver platform is elevated by the Dynamic low frequency driver, making this 64 Audio’s second hybrid custom IEM. Along with that major update, inside A4s is our Tia technology, LID and our patented Apex and 3Dfit tech.

2023年1月12日 · 64 Audio's A4s Custom In-Ear Monitors toe the line between a detailed audiophile product and a powerful professional monitoring tool.

2024年8月21日 · 相比前作，A4S声音更加鲜明活跃，这颗动圈令A4s拥有无与伦比的超低音还原能力，同时能保持中高音的清晰度和APEX所带来的宽阔度，其鼓点的速度表现也非常适合鼓手、贝斯手快速多变且要求细腻度的音色转变。

2022年1月22日 · The A4s was released by 64Audio at the end of 2021. It is a four driver custom in-ear monitor: dynamic driver for bass, two different balanced armature drivers for midrange and mid-high as well as a tia high frequency driver.

聲音分析 A4s 的特徵，毫無疑問是漂亮的低音響應，幾乎完全降級到低於 200 Hz 的區域，並在其峰值處集中不少於 13 分貝的低音，我能感受到20赫茲的頻率比我在其他任何IEM上都多。

64 Audio is proud to introduce our newest four driver custom in-ear monitor, A4s. This complete redesign of our four driver platform is elevated by the Dynamic low frequency driver, making this 64 Audio’s second hybrid custom IEM. Along with that major update, inside A4s is our Tia technology, LID and our patented Apex and 3Dfit tech.