using one channel from the AM band, and one channel from the FM band. This early form of stereophonic reception was called simulcast stereo. Early FM broadcast signals did not have the stereo carrier (pilot) signal that carried the stereo left and right channels. After the stereo signal standard was established, a stereo multiplex circuit connected to or built into the receiver was used to decode the stereo signal. The first true FM Multiplex Stereo Receiver was sold by H.H. Scott in 1961 with introduction of the Model 350 tuner. In 1959, Harman Kardon marketed the Citation II, an early ultra wideband stereophonic tube amplifier. It featured 60 watts/channel output with a frequency response of 18-60,000 Hz at 20 watt output. The company promoted their philosophy of designing high fidelity sound using amplifiers that provided widest possible audio bandwidth. Although the human ear highest audible range is around 20,000 Hz, the full range of sound goes beyond that with harmonics and overtones that may be beyond the hearing range of the human ear. These harmonics interact with other frequencies to produce audible secondary sounds or interference. In 1969 Harman bought the major speaker manufacturer JBL. In 1970 Harman marketed the first stereophonic cassette recording deck with Dolby B noise reduction. In 1976, Harman supported Jimmy Carter's bid to become President of the United States. When Carter became President, he appointed Harman to be the Deputy Secretary of Commerce. As US law required appointees to have no direct business interests in day-to-day activities, Harman had to sell the company, and he sold the company to Beatrice Foods, a large conglomerate, for $100 million. 1980 brought the introduction of the Citation XX high current amplifier, which provided quicker response to large signal transitions from the power amplifier to the speakers. The Citation XX amplifier was called "the world's best-sounding power amplifier" by the editors of The Audio Critic magazine. The amplifier was designed by Finnish engineer who discovered transient intermodulation distortion (TIM) in 1970 and worked to mitigate its effects in the following years. The Citation XX was a project to get the best possible measurements of output signals, and the best perceived sound. A record player with tangential pick-up arm Rabco was released in 1980, too. After the Carter presidency, Harman regained ownership of Harman International. In 1980 he purchased Harman International from Beatrice Foods for $55 million. However, the receiver