Superb Selectivity FM Front End Junction type FET (field effect transistor) and frequency linear 3-gang variable capacitor are utilized in the front end to achieve an exceptional effective sensitivity of 1.9/uV. Reliable performance is assured in both weak and strong signal locations. Highly Stable FM IF Section A high density IC, which incorporates 3 differential amplifier stages, plus diode limiter and quadrature detector circuits, is used together with two dual element phase linear ceramic filters in the IF (intermediate frequency) amplifier section. By inserting a transistorized matching buffer amplifier between the ceramic filters, increased gain and phase response flatness are obtained, resulting in an outstanding effective selectivity of 60dB. Adjacent signal interference and even spurious signals at the same frequency as a desired station become strongly suppressed. Multiplex Circuit Includes Newly Developed IC In order to obtain stable separation without adverse effects from ambient temperature and aging variations, the stereo demodulator includes a newly developed IC PLL (phase locked loop) circuit. Beautiful stereo reception can be enjoyed with superb harmonic and intermodulation distortion characteristics. Since a low pass filter is built into the MPX circuit, carrier leakage becomes a remarkable -62dB. The significance of this specification is most apparent when tape recording FM programs. Advanced Performance AM Tuner Selectivity and frequency response are improved by employing a high density IC and ceramic filter circuit in the AM tuner section. This IC functions uniformly under both strong and weak input signal conditions. The balanced type mixer circuit features excellent spurious characteristics and contributes to the enjoyment of refreshing AM programs even in strong signal locations. Effective FM Muting Comfortable and noise-free FM station selection is ensured by the built-in muting circuit which blocks pop noise and interstation noise during tuning knob operation. The circuit also is designed to eliminate click noise when operating the power and function switches.