Bang and Olufsen NL/ML Delay box

To prevent echo in a network Link/Master Link setup, with a Master Link Audio Master in the living room(main room) and other Master link products.The sound can be synchronised  by connecting an NL/ML Delay box between the Audio Master and the Master link products..

The box on sale here is new and supplied with uk  AC adaptor.( 100- 240 v input)