I purchased waht I thought were MDR-ZX770BN headphones but, upon receiving them, I see they are labelled MDR-ZX780DC. I believe the DC indicates supply to Costco but is there a difference in the 770 and 780 spec?
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Welcome and thank you for considering SONY Community!
Their specifications are almost the same.
The only difference is that the MDR-ZX780DC comes with a USB Charger and Carrying Case aside from the carrying pouch.
MDRZX770BN was released 2015 and MDR-ZX780DC were released 2016.
You may check the full specifications of these models in the links below.
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