HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing
HPS S4R endorsement pricing

HPS S4R endorsement pricing

Regular price €399,00 Sale price €199,50

This item is only available for approved endorsers. 


The endorsement is a two-way street. All we ask is to share a real experience with our headphones in a way that feels natural to you. If something we ask for doesn't resonate, we can always find another way.

Hear your performance as it is, no sugar coating

Your recording headphones are the first touch with your performance. All the details must be preserved and nothing should be exaggerated. A well tuned recording headphones will have no mercy on you and push you to your absolute best. Meet the new S4R recording headphones made for the most demanding audio creators.

sound seal acoustics ™

With 100% separation of front and back earcup cavity, these headphones deliver uncompromised frequency and transient response with minimal sound leakage. No more click bleed in to your recordings.

stainless steel, nautical leather, velour, aluminum & wood

Studio environment can be very demanding to headphones' wear and tear. Cable tripping, accidental drops and plugging them into wrong outputs demands extreme built quality. Our 5 year limited warranty program is a testament of dedication to high quality.

Wear them for hours straight, no discomfort

Self-adjusting strap with weight distribution enables long sessions without headaches caused by single pressure points. The earpads are soft velour-pleather hybrid and disperse heat well. Sweaty ears are a thing of the past.

Frequency response

Comparisons with other studio headphones included


Frequency response

Variation in frequency response in band from 20Hz to 20kHz ~10,0dB SPL


111dB / 1vrms@1Khz 30ohm


32ohm, smart devices ready

Ear cups dimensions

Outer diameter: 90 mm

Ear cups material

American walnut

Headband material

Stainless steel and nautical artificial leather

Earpads size

Outer diameter: 90 mm
Inner diameter: 55mm
Depth: 20mm

Earpads material

Acoustic foam, extra elasticity poly leather and velour

Cable termination

Detachable 2 meters long Y 2.5mm mini jack


3.5mm jack with an adapter to 6.3mm jack



Magnet type


Transducer type



2 layered

Membrane material

PET 25u

Matched speakers

Handpicked pairs


5-year limited warranty

Trial period

30 days from delivery date

More technical data:

OLLO Audio manual

R&D LAB | balancing sound in a closed cabinet

We listened

Learn about the list of features that were well accepted by the community, and also the list that we were even more interested in - the list of things we had to change for the new S4R model.

Cracking comfort

Clamping force, earpads design, sound isolation, heat dispersion and cable angles. Watch our approach to comfort using behavioural science and physics.

Sound isolation

We put a lot of effort into balancing isolation and final frequency response to deliver recording headphones that sound neutral and keep the click track from bleeding out. Watch Rok geek out on the game.





Since the S4R 1.1 have a similar frequency response to the S4X reference model, it will do an excellent job for preliminary mixing and producing. The closed cabinet has its flaws regarding the sound stage, though, so our recommendation for mixing and mastering lies with the S4X model.

The upgrades are available for all the EU based customers. Learn more about the upgrades here.

We ship worldwide. If it's not on the list, you got to reach out to us, so we can check the exact shipping costs, and you can make sure with your local authorities to see if any tax or import duties apply, so you have the final cost of getting the item to your destination.

We know it's challenging to make a decision based on tech specs and reviews. The only proper way to know if any of our products are appropriate for you is to give them a try. If you don't like what you hear, we offer a 30-day return policy with no extra costs.

30 days money back is available for all purchases.

If you decide you want to return your headphones and you bought them directly from us, contact us at info@olloaudio.com or via HelpDesk before the end of the 30-days period after delivery, and let us know the serial number of the headphones and a brief reason for return. We'll send you an RMA (Return Material Authorisation) number along with shipping instructions via email. Once the headphones are returned and checked in, we'll issue a refund for your purchase price using the same payment method you used for the purchase. Keep in mind that we don't refund shipping costs or import duties/taxes.

The trial period of 30 days starts from the day you receive the headphones.



Let's chat! Use the chat window in the lower right corner. 🡶


* considered at reasonable SPL levels about 85dB. They can go well beyond 110dbSPL. Be careful, that can damage your hearing.
** read about 5 year limited warranty terms
*** tested at 22 degrees Celsius air temperature with test subject preforming moderate activities.