Studio headphones S4 or S4R upgrade to S4X
OLLO Audio

S4 or S4R upgrade to S4X → 99€ + shipping

Regular price €149,00

The upgrade is currently only available for EU customers.
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 exception of ear pads