Abstract: A tool-free microphone connector assembly with non-threaded engagement between parts is provided. New improvements in the present invention include a main body housing, a rear sleeve, and an annular tightening loop. The main body housing comprises a pressing button disposed thereon, a locking tube with a non-threaded outer tubular surface, and two projecting locking pieces. Each projecting locking body defines a locking contact and a guiding slope. The rear sleeve of flexure materials comprises a through bore at its one end and an engaging contact at the other end.