Vintage Sony MTL-10 Multi Cassette Changer & Player! Rare! w/ JL-10, Needs Work. Holds up to 10 cassette tapes. Needs work. It powers up and loads the JL-10 cassette magazine, positions the magazine appropriately for playing the selected cassette, the motor to move the cassette over for playing starts, but the transport mechanism does not engage the cassette and move it over.