Reference headphones S4X

Reference headphones S4X are hand built on the edge of the Alps – Slovenia. All materials and manufacturing processes used are designed to be sustainable to the environment, employees, and society. The unique value of these headphones is in their sound reproduction. Designed to sound balanced throughout the spectrum, makes them a great choice for A-level audio engineers. OLLO S4X are a trusted choice by engineers working with U2, Lady Gaga, Usher, Bryan Adams, etc.


2020 OLLO Audio R&D team, Slovenia

Year of production

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