[1][2] Traynor first became popular in Canada by providing less expensive versions of the circuits used in Marshall and Fender amplifiers of the time.

[3] The revived brand now produces a wide range of electric, acoustic, and bass guitar amps.

By the end of 1963, Traynor was selling the Dynabass amps along with matching 15-inch speaker cabinets, as well as Traynor portable columnar public address (PA) speakers[1][4] based on a reference book of 1930s RCA commercial loudspeaker designs.

The YBA-1 "Bass Master" circuit is very similar to the Fender Bassman, which in turn inspired the classic Marshall 1959 "Plexi" amplifier.

[2] In 1976, Peter Traynor left Yorkville Sound, suffering from a bad back.