DEVELOPMENT PROCESS

OF THE S4X REFERENCE HEADPHONES

1. WE LISTENED - GATHERING FEEDBACK

We asked our customers how satisfied they are with the S4 model and sorted feedback into two buckets. The good stuff and the bad stuff. The more research we did, more obvious it became what are the challenges we will need to face.

👍 THE GOOD STUFF

* Natural sound
* Serviceability
* Comfort
* Individual measurements
* Build quality

👎 THE BAD STUFF

* Bigger ear pads
* Better paint job
* L and R side should be more visible
* A dip at about 8-9kHz
* Headband rings
* Could be more reference oriented response

2. RESEARCH AND DEVELOPMENT PROCESS

In the research phase, we're making thorough market research, finding all the products that are available on the market, study them, and try to find a different or improved angle to it. 

THE MISSION

THE TARGET RESPONSE

IMPROVING THE HEADBAND

The biggest challenge with the headband was that it rang when you touched it. So we tried different designs and decided on flat steel. We then focused on clamping force as it affects the sound pressure that changes the frequency response significantly. The goal was to achieve a sweet spot where we got a good response while fitting most head sizes to ensure comfort.

INNER ACOUSTICS

The final stage of the S4X development was finetuning the frequency response and overall feeling of the sound. Different combinations of foams and meshes enable us to control the airflow and precisely impact the frequency response curve.

3. TESTING WITH THE PROFESSIONALS FROM THE INDUSTRY

We were really happy with the results we got in the lab. But before we were ready to release the new S4X to the world, we wanted a green light by the professionals from the industry. We reached out to Marc Urselly  [U2, Foo Fighters, Nick Cave, Lou Reed, Sting, Keith Richards] and William Robertson [Mick Jagger, Nicki Minaj, Will.I.Am] to deliver the final verdict.

"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.”

- MARC URSELLI
[U2, Foo Fighters, Nick Cave, Lou Reed, Sting, Keith Richards]


"The separation between the instruments, the dynamic and stereo image is perfect to be comfortable to mix with them.
I was amazed by the S4. But I am floored by the S4X!
Truly amazing."

- WILLIAM ROBERTSON
[Mick Jagger, Nicki Minaj, Will.I.Am]

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