Can i charge my anker q30 with my 33 watt fast charger?
I don’t know for sure, but I bet @The_Professor would know
Yes should work. Certainly won’t do any harm trying.
Headphones consume 5V 1.6A max and your charger can do that.
A USB Smart charger should only deliver what the device can accept.
Basically any charger can be used to charge headphones.