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May 29, 2020

Is a burn-in needed for Bose 700?

I have returned my Bose 700 (stuttering issue with 1.4.12 firmware) and bought a new one (they still have the old firmware) and there's no issue with them. However, I feel they have a lot less bass than the previous which I have used for 8 hours every day for 2 weeks. The question is... is a burn-in needed for these headphones? if so... for how long? Has Bose a document for this?