Here the diagram of stereo headphone amplifier. The circuit called Studio Series Stereo Headphone Amplifier, of course this a top rated and high performance headphone amplifier circuit.
Stereo Headphone Amplifier Main Features:
- High output power (up to 200mW; into 8Ω and 32Ω)
- High performance – very low noise & distortion
- Drives high and low-impedance headphones
- Dual headphone sockets – can drive two pairs!
- Works with a preamp or any line-level audio source
Frequency response = flat from 10Hz to 20kHz (see graphs)
Rated output power = 200mW into 8Ω and 32Ω, 85mW into 600Ω
Max. output power (current or voltage limited) = 575mW into 8Ω, 700mW into 32Ω, 130mW into 600Ω
Harmonic distortion = typically .0005% (600Ω load),.001% (32Ω load) and .005% (8Ω load)
Signal-to-noise ratio (A-weighted) = -130dB (600Ω), -120dB (32Ω) and -111dB (8Ω) with respect to 100mW output power.
Channel crosstalk = better than -68dB from 20Hz-20kHz at 100mΩ output power (see graphs)
Input impedance = ~47kΩ || 47pF
Output impedance = ~5Ω
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