The MS6865 is low distortion stereo power amplifier that has 3 stereo inputs with volume control. It can drive 2W of continuous average power into a dual 4 bridged-tied (BTL) speaker or 2 * 90mW into stereo 32 single ended (SE) headphone. The volume control offers wide range of gain and attenuation for stereo input. All of the functions are easy setting that can be set by I2C interface. The MS6865 has good features for portable equipment, including wide voltage operation 2.4V~5.5V, low power consumption, power management, component less and small package TSSOP20, make the MS6865 ideally suitable for use in the portable digital audio equipments.