The HE-400S is one of the highest efficient planar headphones in the world - it sounds great with any device, including your smartphone. The full-size makes them comfortable for extended listening sessions, while the planar diaphragms significantly lower distortion to create rich and clear sound that audiophiles have come to expect from HiFiMAN.
Tax is only charged if shipping to California. Visit our Shipping Info page for additional information.
We honor returns within 30 days from the original delivery date and offer free exchange shipping. Some restrictions do apply for built-to-order items, or very large items like furniture.
For additional details, or to initiate a return, please visit our Returns Page.
*Please note that while we do our best to have the most up to date product imagery, in-line changes will happen with brands and the actual product shipped may differ slightly.