Magnavox manufactured radios, TVs, and phonographs. Radios and phonographs were available on the wards. They are historically renowned for the range of phonographs (turntables) they produce. Its rare and unusual phonographs include models by Thomas A. Edison. Early electrical phonographs as well as many other audio formats started out as monaural formats. Older provisions listed several items such as televisions, phonographs, etc. It originally specialised in the sale of phonographs, cylinders and shellac discs. Later cylinders were reproduced either mechanically or by linking phonographs together with rubber tubes. For these systems some common sensors are microphones, instrument pickups, and phonographs. It was not unusual for electric recordings to be played back on acoustic phonographs. Philco had begun selling these all-transistor phonographs in the fall of 1955 for $59.95. Proctor used innovations such as electric lighting and phonographs in his "continuous daily vaudeville" theater. Thereafter it sold only records and phonographs of its own manufacture. As electrical recording and amplification improved there was increased demand for coin-operated phonographs. The reproduction of domestic phonographs was similarly limited in both frequency-range and volume.