Rtings has measurements of quite a few. Depending on what phone you have, the quality can be real good.
Bose has a poor reputation, but the QC35 II’s are real good for what they are, as well as the competing Sony MDR1000X M3.
Bose has a poor reputation, but the QC35 II’s are real good for what they are, as well as the competing Sony MDR1000X M3.