POWERFUL FLAT RESPONSE

by equal loudness contours

based on IEC 61672:2003 standard

S4R Recording headphones

Speaker size: 50mm closed back design
Frequency range: 20-22kHz balanced response
SPL: 114dB hearing threshold
Impedance: 32ohm
Ear cups outer diameter: 86mm
Ear cups inner diameter: 70mm
Ear cups material: Walnut
Headband material: Stainless steel and artificial leather
Ear pads size: 90mm
Ear pads material: Acoustic foam, extra elasticity artificial leather
Cable termination: detachable Y cable -  2.5mm mini jack
Connector: 3.5mm jack with adapter to 6.3mm jack
Servicable: Every part of HPS S4 is replacable with home tools 

S4 Mixing headphones

Speaker size: 50mm open back design
Frequency range: 20-22kHz flat response design
SPL: 112dB hearing threshold
Impedance: 32ohm
Ear cups outer diameter: 86mm
Ear cups inner diameter: 70mm
Ear cups material: Walnut
Headband material: Stainless steel and Italian leather
Ear pads size: 90mm
Ear pads material: Acoustic foam, extra elasticity artificial leather
Cable termination: detachable Y 2.5mm mini jack
Connector: 3.5mm jack with adapter to 6.3mm jack
Servicable: Every part of HPS S4 is replacable with home tools 

TRUE COMFORT

achieved by large over the ear earpads and lightweight construction

MONEY BACK GUARANTEE

if you don't like them you can return them in 30 days after delivery

TRUSTED AND TESTED BY MANY

world class engineers

Made for demanding producers

HPS S4 Studio headphones

Neutral and brutally honest. A tool you can trust your mixes with.
€349.00
Made for demanding producers

HPS S4R Recording headphones

Versatile, balanced and strong noise cancelling design for recording sessions
€349.00

FREE TRIAL AVAILABLE WORLDWIDE

TRY BEFORE YOU BUY

AVAILABLE IN INSTALMENTS
Pay 150€ now and 49,75€ in 4 monthly payments

Write to info@olloaudio.com for instalment offer

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