Studio headphones S4 or S4R upgrade to S4X
OLLO Audio

S4 or S4R upgrade to S4X or S4R 1.1

Regular price €190.00

For EU customers only. 

Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden.

Currently unavailable for non-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 the exception of ear pads

shipping options upgrade