The Etymotic ER2-XR shows what Etymotic is known for giving a pronounced bass response while keeping the mids and highs clear. The ER2-XR is built with a high-performance dynamic driver to satisfy the needs of musicians, while being an alluring option for anyone looking for a well-rounded bass. The ER2XR “eXtended Response” is tuned to have an emphasized bass, adding 1-2dB to the mid-bass and 3-4dB to the sub-bass. The rest of the frequencies are practically identical to the ER2SE.
