S4X
REFERENCE HEADPHONES

FLAT OUT OF THE BOX

Designed and measured using IEC 60318-1 standard.

S4X REFERENCE

Flat out of the box.
Neutral and brutally honest.
30 DAYS TRIAL ON ALL PURCHASES

399,00€

I WANT ONE NOW

POWERFUL ACOUSTICS

Based on S4 model with upgrades requested by OLLO community.
Flatter frequency response, more space for your ears and no more headband ringing.

CUSTOM DESIGNED

EARPADS

Studio headphones HPS S4X earpads
Studio headphones HPS S4X woven mesh

POWERED by SATTI

HIGH PRECISION WOVEN MESH

HANDPICKED COMPONENTS

MATCHED SPEAKERS

Studio headphones HPS S series matched speakers
Studio headphones HPS S series cable

DETACHABLE

2000 MM CABLE

COMFORT and DURABILITY

NEW HEADBAND DESIGN

Studio headphones HPS S4X
Studio headphones S series warranty

WE'VE GOT YOUR BACK

5 YEARS LIMITED WARRANTY

30 days trial available

TRY BEFORE YOU DECIDE

We know it's difficult to make an educated decision based on tech specs and reviews. The only true way to know if they are for you is to try them out. 

100% REFUNDABLE TRIAL DEPOSIT.
No questions asked. 

SHOW ME HOW TRIAL WORKS

DESIGNED FOR PRO USERS

SERVICEABLE AND UPGRADEABLE

SPARE PARTS STORE

TRUSTED BY INDUSTRY PROFESSIONALS

How do they compare

HOW DO THEY COMPARE?

S4X vs. S4 vs. S4R vs. HD 650 vs. HD 518 vs. AKG K371 vs. AKG K712 vs. SHURE SRH1440 vs. LCD-1 vs. ATH M50X vs. DT 990 PRO vs. DT 770 PRO

Technical specification

Speaker size 50mm
Frequency range 20-22kHz reference response
SPL/sensetivity 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

THE PROCESS OF DEVELOPING THE S4X

OLLO Life #008
THIS IS HOW WE DESIGN PRODUCTS AT OLLO

Have you ever wondered how we design products here at OLLO Audio? In this first part of the "how we did it" series, we are sharing the 4 phases of product design we use to get a bigger picture around the product we are about to make.

OLLO Life #009
WE LISTENED - GATHERING FEEDBACK ON THE S4

Rok talks and shows the feedback gathering process that is a part of the first phase in product development - Customer development phase. We listened and sorted feedback into two buckets. The good stuff and the bad stuff.

OLLO Life #010
DEVELOPMENT OF S4X REFERENCE HEADPHONES

Thanks to your feedback and research we've done, it's obvious we had to address three main issues: headband, earpads and of course a better sound.

FIRST IMPRESSIONS

by MARC URSELLI [U2, Foo Fighters, Nick Cave, Lou Reed, Sting, Keith Richards]
and WILLIAM ROBERTSON [Mick Jagger, Nicki Minaj, Will.I.Am]