The Dual CL 20 is a loudspeaker manufactured in Germany between 1968 and 1970. Constructed from walnut, it features a classic vintage design that complements various audio setups. The speaker was priced originally around 396 DM at the time of its release. It belongs to a series that includes other models such as the CL 9, CL 10, CL 11, and more. The functional specifications and design of the CL 20 make it suitable for enthusiasts of vintage audio equipment.