Data Acquisition Analog To Digital Converters Shenzhen Kaixuanye Technology Co., Ltd. , https://www.iconlinekxys.com AN7114 Audio power amplifier circuit 
AN7114 under Vvv = 6.0V, THD = 10%, RL = 8Ω, output power can reach 0.6W, noise output 3mV.
Limit parameters: Vcc = 11V, dissipated power (without heat sink) is 1.2W, and with heat sink is 2.25W. Working temperature -20-70 ℃, suitable for small portable radio recorders and audio equipment as power amplifier. AN7115 Audio power amplifier circuit Under the conditions of Vvv = 9.0V, THD = 10%, RL = 8Ω, the output power of AN7114 can reach 2.1W, and the noise output is 3mV.
Limit parameters: Vcc = 13V, dissipated power (without heat sink) is 1.2W, and 2.25W with heat sink. Working temperature -20-70 ℃, suitable for small portable radio recorders and audio equipment as power amplifier. BA313 with ALC recording and playback circuit BA313 is a preamplifier circuit with built-in automatic level control circuit (ALC) for recording and playback. It is commonly used in cassette tape recorders. It has a 9-pin DIP dual in-line package.
Wide range of automatic level control, wide operating voltage range (3-12V), high gain, low distortion, low noise.