Flat out of the box...
...is the phrase reviewers coined for the S4X. Their neutral and honest sound signature was perfected in close R&D collaboration with professional mixing and mastering engineers.
We don't pretend to know flat better
Lab research showed massive inconsistencies in popular target curves. So we relied on renowned industry professionals instead and reverse-engineered their preferred EQ compensations as a base for the S4X's frequency response. S4X's sound signature was advised by the pros, not lab geeks. Intrigued? We offer 30 days trial on all purchases.
Amplifier independent
As mixing takes place in many different setups we went with 32 ohm impedance and made them compatible with pro level and laptop integrated amplifiers. Industry standard jack connectors make them a plug and play on just about any audio gear.
Benefits of individually measured pairs
With your headphones' measurements charts you will have a better understanding of what you're hearing and have an edge in mixing and mastering for best translation of your projects.
"I love the depth and clarity I get in my mixes with the S4x. Especially in the kick and snare which is often so hard to get a punch in headphones that will translate to a speaker. But more then anything, they really make it fun to listen to music for a long period of time!"
JOHN ESCOBAR - Independent Producer/engineer, Professor - Berklee College Of Music![]()
"I never used headphones to make my mixes, except to check for any noise that was causing me problems. Thanks to their excellent work I can mix without compromise even in the living room. Ollo Audio puts in the reference headphones the same care that I put in my work. "
FABRIZIO ARGIOLAS - Lana Del Rey, Tiziano Ferro, Emma Marrone, Pfm, etc![]()
"The separation between the instruments, the dynamics and stereo image are perfect to be comfortable mixing with them.
I was amazed by the S4. But I am floored by the new S4X reference headphones.
Just amazing!"WILLIAM ROBERTSON - Mick Jagger, Nicki Minaj, Will.I.Am.![WILLIAM ROBERTSON OLLO Audio ambassador]()
TECHNICAL SPECIFICATIONS
Frequency response |
Variation in frequency response in band from 20Hz to 20kHz ~13,7dB SPL |
SPL/sensitivity |
108dB / 1vrms@1Khz 30ohm |
Impedance |
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 |
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-year limited warranty |
Trial period |
30 days from delivery date |
More technical data:
R&D LAB | how we approach sound signature
powerful acoustics
Acoustics in headphones are shaped with earpads and airflow resistors. The driver is only half of the final sound.
scientifically validated
We reverse engineered what professional consider flat and validated all data sets using state of the art frequency, impulse, THD and other measurements techniques.
built to last
S4X are made using aluminium, stainless steel, wood and minimal plastic components. If you take good care of them, they will last. For moments when life happens, we offer any and all spare parts.
TRY BEFORE YOU DECIDE
5 YEARS LIMITED WARRANTY
PAY IN PAYPAL INSTALMENTS
BUY PREVIOUS MODEL S4X 1.1
BUY PREVIOUS MODEL S4X 1.1
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 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.
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.
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