If you're currently still testing on free trial offer we had, you're still under contract to return them or buy them.  In case you don't do so one week after testing is over, we'll start legal process for collecting our units by EU laws in 30 days. Please, don't push us there. Thanks.



world class egineers


Muse, Radiohead, Bon Jovi, Spice Girls, Ronan Keating, INXS,...

"With their elegant design and clear, neutral sound, HPS S4 Studio headphones are a welcome addition to my monitoring options."


U2, Rush, Beck, Genesis, Nikka Costa, Roxette, East 17, The Cure,...

"My mixes are very immersive, spacious and full of emotion. The HPS S4 respect all of the depth, width, air, tight bass, space and detail that I work so hard to create in a mix. Excellent reference headphones for mixing and mastering. Switching between the headphones and my speakers is effortless. And they are really light in weight and comfortable for long periods of use .... and they look cool too ! 
Job well done!"


Amy Winehouse, Jessie J, James Arthur, Joss Stone,...

“The OLLO Audio PLAY2ME system is my favorite headphone monitoring system. The headphones sound amazing and with the silent subwoofer I can feel every bit of the low end without blasting it on the mains. I use it on every mix.”

Want to become endorsement yourself? Please apply here. Will will look into your application and get back to you.
Endorsement gives you money back guarantee so you can test them without worry.

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