The ATH-R50x professional open-back reference headphones are designed to provide a natural listening experience with an expansive soundstage thats ideal for all manner of critical-listening tasks. The headphones drivers are modelled after those used in the original ATH-R70x, now re-engineered to deliver bass thats surprisingly powerful for an open-back model, plus an accurate upper midrange to ensure the clarity of vocals and lead instruments without sacrificing overall balance.