Before revision: (1957) The World's First Transistor Hi-Fi System In terms of commercial production, The Fisher TR-1 was the first " All Transistor " preamplifier, which became available mid-1956.Announcement High Fidelity, March 1956, p. 9 In 1961, a company named Transis-tronics released a solid-state amplifier, the TEC S-15.Announcement Audio Magazine, Aug 1961, p. 44 The replacement of bulky, fragile, energy-hungry vacuum tubes by transistors in the 1960s and 1970s created a revolution not just in technology but in people's habits, making possible the first truly portable consumer electronics such as the transistor radio, cassette tape player, walkie-talkie and quartz watch, as well as the first practical computers and mobile phones.
After revision: (1957) The World's First Transistor Hi-Fi System In terms of commercial production, The Fisher TR-1 was the first " all transistor " preamplifier, which became available mid-1956.Announcement High Fidelity, March 1956, p. 9 In 1961, a company named Transis-tronics released a solid-state amplifier, the TEC S-15.Announcement Audio Magazine, Aug 1961, p. 44 The replacement of bulky, fragile, energy-hungry vacuum tubes by transistors in the 1960s and 1970s created a revolution not just in technology but in people's habits, making possible the first truly portable consumer electronics such as the transistor radio, cassette tape player, walkie-talkie and quartz watch, as well as the first practical computers and mobile phones.