Looking for a TI headphone amplifier that has two modes of operation...
Mode-1] Amplification of audio frequencies in human voice range of 300Hz to 3.3kHz (or 0 to 4kHz).
Mode-2] Amplification of signals of the entire frequency range (0 to 20kHz). This is the conventional sterio amplification.
The amplifier should be switchable between the two modes of operation.
