high fidelityadj.n.

1933 Billboard 15 Apr. 15/4 (advt.) The RCA Victor Photophone Stationary type 35 mm Projector..providing high fidelity sound—the ultimate in sound motion pictures.

1934 Wireless World 19 Oct. 318/2 With the introduction of the ‘high fidelity’ receiver the broadcasters, who have repeatedly criticised the manufacturers for low-quality receivers which cut off the extreme notes, now make the admission that improvement is necessary in their own transmitters.

1955 J. B. Priestley & J. Hawkes Journey down Rainbow 27 There was talk; there were high-fidelity records.

1957 Times 7 Oct. 8/3 The power of the transmitters guarantees high fidelity reception of the wireless signals.

1973 H. L. Nieburg Culture Storm iv. 62 Even in the concert hall, an audience accustomed to high-fidelity amplification has difficulty relating to undoctored sound.

2005 D. Nicholls Understudy 212 Retro-jazz burbled inoffensively from overdesigned hi-fidelity speakers.

1928 Brit. Patent 291,014 1/1 The invention consists in arranging the receiving apparatus so that it may be readily changed from a condition of high fidelity with regard to the signals of a plurality of adjacent frequency bands or channels to a condition of high selectivity for distant reception through interference.]

1938 Amer. Home Oct. 71/4 (advt.) RCA Victrola U-134-A—Record and radio entertainment in a distinguished 18th Century Cabinet. Has Gentle Action Automatic Record Changer... High Fidelity... Magic Voice... Crystal Pick-up.

1958 Times 17 May 9/5 This search for the elusive ‘high fidelity’ is pursued with an avidity only limited by the depth of his pocket.

1993 National Ballet Mag. (Toronto) 24 Feb. 38 (advt.) By digitally controlling signal placement, Denon has redefined high fidelity for Audio Video Surround Sound.

2009 G. Milner Perfecting Sound Forever v. 140 As a concept, high fidelity is aspirational, and it fits well with the postwar sense of possibility and a conquerable frontier.