Regular price €399,00

30 days trial

EVERY PURCHASE COMES TO YOU WITH 30 DAYS TRIAL, whether you pay the product in a lump sum or in instalments.


We trust our products and we manufacture them to last. Our 5 year warranty program is a testament to our commitment to quality. Read more about it here.



Instalments plan for the S4X model:

Trial deposit: 159€ + shipping
+ 12 monthly instalments of 20€ (if you keep them)
= 399€ + shipping (no additional fees in instalments)


Technical specification

Speaker size 50mm
Frequency range 20-22kHz reference response
SPL/sensitivity 108dB / 1vrms@1Khz 32ohm
Impedance 32ohm, smart devices ready
Ear cups outer diameter 90mm
Ear cups material American walnut
Headband material Stainless steel and nautics leather
Earpads size Outer diameter: 90 mm
Inner diameter: 55mm
Depth: 25mm
Earpads material Acoustic foam, extra elasticity poly leather and velour
Cable termination Detachable 2 meters long Y 2.5mm mini jack
Connector 3.5mm jack with an adapter to 6.3mm jack
Weight 350g
Magnet type Neodymium
Transducer type Dynamic
Coil 2 layered
Membrane material PET 25u
Matched speakers Handpicked pairs
Warranty 5 years limited warranty
Trial period 30 days from delivery date

Buy at Amazon

The S4X model is also available at Amazon UK and Amazon IT.


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 dynamics 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]

How trial works

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 in all purchases, whether you buy with instalment plan or in one lump sum payments.

No. Trial period comes with every purchase automatically. Simply order, wait for the product, test for 30 days and then make the final verdict.

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

If you decide you want to return your headphones and you bought them directly from us, contact us at 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.

To be entitled to a for a full refund, you need to safely pack the headphones in original packaging with all the accessories (pouch bag and cable).

If any items are missing or damaged, or if the return is initiated outside the 30 day period (or if you ship the return more than 15 days after the RMA (Return Material Authorisation) instructions are sent), we reserve the right to deduct an appropriate restocking fee from your refund. Restocking fees are typically between 5 and 15% but may be equal to the costs associated with any repairs/replacements needed.