Studio headphones S4 or S4R upgrade to S4X
OLLO Audio

S4 or S4R upgrade to S4X → 99€ + shipping

Regular price €149,00
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For EU customers only. Non-EU customers can order via email info@olloaudio.com

The upgrades will be done as soon as we receive your headphones, no delay. Please refer to the diagram below for time estimates.

    With an upgrade, you get:
  • New headband
  • New earpads
  • New inner acoustics
  • New individual measurements
  • 5yr limited warranty
  • We do not return used parts with the exception of ear pads