The Etymotic ER2XR provides enhanced bass response while maintaining the midrange and treble clarity for which Etymotic is renowned. The well-fitting earplugs provide isolation from external noise of 35 - 42 dB. So you can hear all the details of the music undisturbed, regardless of whether you hear loud or quiet music. The ER2 series has been fine-tuned for low tolerances and thus achieves high reproduction accuracy. This allows you to experience the music as at a live concert. The metal housing of the ER2XR is very slim and fits comfortably into all ear canals, even narrow ones. The anodized blue surface looks noble and is particularly robust. Various silicone and foam ear cushions ensure a firm fit in the ear and good isolation from external noise. Thus a high wearing comfort and an optimal sound flow are ensured. The 1.2 metre long, reinforced earphone cable can be easily replaced when needed thanks to the MMCX connector.