BH7884EFV is a low voltage, low noise, high output speaker and headphone amplifier drive from ROHM. It is manufactured using Bi-CMOS process. This IC supports: headphone amplifier gain adjustment, active/suspend switching, speaker amplifier stereo/monaural switching, and amplifier mute switching. All functions are controllable from a microcontroller. Built-in digital noise reduction circuits eliminate digital noise and BEEP sounds.