View tda7334 datasheet:

TDA7334 ® LOW NOISE STEREO PREAMPLIFIER DUAL CHANNEL PROCESSOR FOR PLAY- BACK APPLICATIONS. LOW NOISE HEAD PREAMPLIFIER GROUND COMPATIBLE MUTE, AUTOREVERSE METAL/NORMAL FUNCTIONS INTERNAL SWITCHES FOR EQUALIZATION LOW SUPPLY CURRENT DIP16 SO16 MIXED BIPOLAR/CMOS TECHNOLOGY DESCRIPTION ORDERING NUMBER: TDA7334 (DIP16) The TDA7334 is a monolithic BICmos IC de- TDA7334D (SO16) signed for use in stereo cassette player systems. The dual preamplifier contains mute, autoreverse, metal/normal facilities for amplification of low level signal in applications requiring very low noise per- low noise forward/reverse switchable input, and formance. allows magnetic heads connection directly to Each channel consists of two cascaded opera- ground. The second one, AMP2, is a standard