1854 B. P. Shillaber 384 A quiet tone is observable in the Russian organs!.. Quiet-toned organs!
1901 M. C. Dickerson ii. 226 As if their fastidious taste allowed petticoats only of brilliant colors always to be worn beneath quiet-toned over-dresses.
2002 (Nexis) 6 Feb. 59 The book seems amiable and quiet-toned while managing to disturb and convince.