I'm thinking about buying a pair of Sony MDRXB950BT headphones but the only device I have that could charge them quickly is that 12v USB charger. Would it be safe to charge them through that adapter?
1. We don't know if the plugs are compatible.
2. USB is automatically 5v, I dunno where you got 12v. Are u talking about a car charger?
3. U can potential "quick charge" if the charger can deliver more power than a normal Sony charger.