The AP4809 is a stereo power amplifier in an 8-pin SOP package capable of delivering 70mW continuous average power per channel into 32 loads with less than 0.1% (THD+N) from a 5V power supply. Amplifier gain is externally configured by means of two resistors per input channel. It was designed specially to provide high quality output power with a minimal amount of external components and is therefore optimally suited for low-power portable systems.