Flat tuned mixing headphones by OLLO Audio
by OLLOAudio
14th December 2023
Thanks Gearspace for all the work you put into running this amazing place. Proud to become a part of it.
OLLO Audio makes studio headphones for mixing and mastering. All models are specifically tuned, handbuilt on the edge of the Alps and come with 5-year limited warranty. Yes, expensive.

At OLLO Audio, research into flat sound is at the core of everything we do. Our design is based on science and user feedback, resulting in flat frequency response targets specifically made for mixing in headphones. We understand that this gets controversial quickly. That's why we invite you to open a thread and geek out with us. We're a friendly community ready to discuss all things audio!
The latest edition of our mixing headphones is now available worldwide. The S4X 1.3 and S5X 1.1 models come with a unit-specific calibration plugin which fine-tunes their frequency response to a tolerance of ~1dB from the flat-sounding target curve. It’s worth noting that these headphones are tuned flat out of the box and that the plugin simply calibrates every unit to perfection. You might be used to SW corrections that shift and change the sound of headphones quite dramatically. Well, that's not how we think about calibration, so don't expect any boost just to make you feel it's doing something.
Unit-specific calibration is a massive improvement over averaged or batch-level target curves that come with generic SW correction plugins achieving ~3dB.
We sometimes joke that only audio engineers can appreciate a flat line. But it's true, you do. That's why we dare to say you'll love our
flat,
boring,
indestructible,
iron-cold,
wood-warm,
aluminium-cool and
screwdriver and pliers serviceable headphones. If not, send them back in 90 days or a few days over - we're human, we get it.

For this first introduction of OLLO to Gearspace members we've lifted the limit on our endorsement program to accept double the number of applicants per day (if it's greyed out, the limit was reached). Only until the 15th of January, 2023. Make a mental note if you're planning on checking it out later. It's getting harder and harder to get in.
KEVIN KWIZ RYAN - Beyoncé - 2013/15 Superbowl, Mary J.Blinge, Busta Rhymes, Missy Elliot,...
“After listening and mixing using the S4X headphones for 2 day’s, I finally realized that I could mix using these headphones alone! Using the S4X headphones pretty much has eliminated the need to do the "car check" for me. These headphones are flat and revealing as well as comfortable for long term use. I highly recommend them!!”
MARC URSELLI - U2, Foo Figthers, Nick Cave, Sting, Lou Reed, Keith Richards,...
“I love my S4X reference headphones: they sound fantastic, are reliable and trustworthy, sit comfortably on my head and around my ears, don't give me ear-fatigue and don't press my ear onto the glasses allowing for continued and comfortable use.”
Stop crying in your car or your bathroom with EarPods in your ears.
Get the right tools to help you achieve translation of your next hit song in spatial or stereo. If you can't hear it right, moving knobs will not help much with the cry baby problem. Proper engineers need proper tools. Period.
Endorsement disclaimer
We believe in fair pricing all year long. We don't do discounts per se, not even on Black Friday. The industry we all rely on went through devaluing enough. It's sad to see posts of people with millions of streams that can barely make a living. It's sad to see performers on stage with long faces knowing they'll get paid only a six-pack. We refuse to be a part of that trend in our industry. Endorsement is our way of making our product more affordable in exchange for support in any way that's natural to our endorsers. From social media to product placement in courses or music videos. It's a collaboration, not a fancy word for a discount. That way most of our marketing budget gets invested into the industry and not spent with Mark, Elon or Jeff. We hope that resonates with you and that you'll join the movement of enough free stuff from all of us.
Here are some links to get you started on the OLLO journey.
Webpage
Youtube
Linkedin company
Linkedin founder