Studio headphones S4 or S4R upgrade to S4X
OLLO Audio

S4 or S4R upgrade to S4X or S4R 1.1

Regular price $159.00
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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

SHIPPING EXPLAINED:

Once you place this order you'll receive an e-mail with instructions to ship the unit to US service center. After upgrade they'll ship it back to you using standard USPS services.