Etymotic Research ER-9 Replacement Filter (Single) for ES49, 9dB, Brown

How can you enhance your audio experience while ensuring optimal hearing protection? The ER-9 Replacement Filter, designed by the reputable brand Etymotic Research, is the answer. This innovative product is specifically engineered for use with the Westone's DefendEar Concert (Style 49) Musicians' Earplugs, and is also compatible with the ES49 and 9dB models.

The ER-9 Replacement Filter is a high-quality, durable, and reliable solution for musical situations that may not require as much attenuation as the ER-15 or ER-25 filters provide. This effective filter features a flat frequency response, a unique characteristic that allows musicians to hear their performance accurately.

The ER-9 Replacement Filter is not just about sound enhancement, it's also about hearing protection. It provides a flat 9 dB sound reduction through 2 kHz, which gradually slopes down to 15 dB at approximately 8 kHz. This ensures that your ears are protected from potentially harmful sound levels without compromising on the quality of the audio.

In essence, the ER-9 Replacement Filter is a testament to Etymotic Research's commitment to delivering innovative, high-quality audio equipment. It's the perfect blend of sound quality improvement and hearing protection, making it an essential accessory for any musician or audio enthusiast.