The SAA7706H performs all the signal functions in front of the power amplifiers and behind the car radio tuner AM and FM outputs and the CD, tape and phone inputs. These functions are:
- Interference absorption
- Stereo decoding for FM and AM (stereo)
- FM and AM weak signal processing (soft mute, sliding stereo and high cut)
- Dolby-B tape noise reduction
- CD de-emphasis function
- Audio controls for volume, balance, fader, tone and dynamics compression.
Some functions have been implemented in hardware (FM stereo decoder, RDS-demodulator and FM Interference Absorption Circuit (IAC) and are not freely programmable.
Digital audio signals from external sources with the Philips I²S-bus and the LSB-justified 16, 18, 20 and 24 bits format or SPDIF format are accepted.
The big advantage of this SAA7706H device is the ?dual media support?; this enables independent front seat and rear seat audio sources and control.