Headphones are low impedance, and can in general not be driven by a single opamp.
EDIT: @analogoutput posted some variants here. Most use either a few opamps or dedicated low-power amps.
Headphones are low impedance, and can in general not be driven by a single opamp.
EDIT: @analogoutput posted some variants here. Most use either a few opamps or dedicated low-power amps.