John R. T. Davies
John R.T. Davies (born John Ross Twiston Davies; 20 March 1927 – 25 May 2004) was a remastering engineer of classic jazz records. He was also a trombonist, trumpeter and alto saxophonist. In the early 1950s he was a member of the Crane River Jazz Band led by Ken Colyer which spearheaded interest in the original New Orleans jazz style. Later he even achieved chart success with the 1960s jazz revival band The Temperance Seven. One of his eccentricites, captured in old photographs, was to wear a fez.
Davies was born in Wivelsfield, Sussex. For many he was considered "the world's leading specialist in the art of sound restoration,", specifically in regard to jazz and blues existing on pre-magnetic tape media such as shellac 78s. He was particularly interested in recordings from 1917 to 1940.
Davies developed numerous methods for restoring old recordings and disliked modern techniques for removing surface noise. While he appreciated attempts to 'clean up' recordings and to create new versions of old recordings for modern audiences (e.g. the stereophonic remastered recordings by Robert Parker), in general he said he preferred remasterings which "keep everything and do as little as possible" to the original recording, and thought the remastering engineer should "Add nothing, take nothing away". The presence of his name on the credit of a reissue is generally considered the mark of a quality product.
Davies was always generous with his time and his collection and wanted it to be available for other people to use for research and reissues after his death. The Borthwick Archive at York University have accepted the entire collection  and are housing it in ideal conditions, and making a transfer suite available so that his wish can be carried out. Information about the collection collated from the collection catalogue is also now available online from the University of York Digital Library and a small selection of the tracks have been made available to listen online
-  Archived March 11, 2007, at the Wayback Machine.
- "John R. T. Davies - Obituaries - News". The Independent. 2004-06-02. Retrieved 2014-08-01.
- Nick Dellow. "John R.T. Davies - The Ultimate Preservationist". Vjm.biz. Retrieved 2014-08-01.
- "John R T Davies". Telegraph. Retrieved 2014-08-01.
- "John R.T. Davies". Bluesworld.com. Retrieved 2014-08-01.
-  Archived October 8, 2007, at the Wayback Machine.
- "Sound archives - Music, The University of York". York.ac.uk. 2013-09-12. Retrieved 2014-08-01.