TOSHIBA Bipolar Linear Integrated Circuit SIlicon .
Toshiba Semiconductor
TA2120FN - LOW CONSUMPTION CURRENT STEREO GEADPHONE POWER AMPLIFIER FOR PORTABLE CD (3V USE)
TOSHIBA Bipolar Linear Integrated Circuit SIlicon Monolithic TA2120FN TA2120FN Low Consumption Current Stereo Headphone Power Amplifier for Portable.