Special integrated amplifier for headphone amplifier LM4880-02

Audiophiles all know that if you plug your headphones directly into the headphone jack of a popular VCD to listen, the sound quality is not as good as that of a high-quality tape player. The reason is that the headphone amplifier circuits here almost all use voltage amplification integrated dual op amps
such as RC4558 , which have high output impedance. The heavy load characteristics are poor, the sound quality is harsh, the treble is harsh, the brightness is lacking, and the bass range and intensity are obviously insufficient. If you need the headphone output function, you must turn on "Mobile". The circuit in Figure 5-41 is an example.