This part is a kind of semiconductor called TA8229K.

Function of this product has LOW FREQUENCY POWER AMPLIFIER.

Manufacturers : Toshiba

Image and pinout :

Some of the text within the PDF file :

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8229K Low Frequency Power Amplifier TA8229K is an audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON/OFF switch. Thermal shut down protection circuit is built in. Features · High power : Pout (1) = 2.5 W (typ.) (VCC = 9 V, RL = 4 Ω, f = 1 kHz, THD = 10%) Pout (2) = 4.6 W (typ.) (VCC = 12 V, RL = 3 Ω, f = 1 kHz, THD = 10%) · Low popping noise at power ON · Small quiescent current : ICCQ = 21 mA (typ.) (VCC = 15 V, Vin = 0) · Soft clip · Built-in thermal shut down protection circuit · Best for supply voltage 9 V, 12 V · Operation supply voltage range: VCC (opr) = 6~15 V (Ta = 25°C) Weight: 3.9 g (typ.) TA8229K 1 2002-03-05 Block Diagram TA8229K 2 2002-03- [ ... ]

TA8229K PDF Datasheet Download