The D&R Telephone Hybrid 1 is an interface between a standard telephone line and a mixing console. Its purpose is to enable to record or broadcast a conversation between a caller and a presenter in an easy way.
 
Superb audio separation between in and outgoing signals are achieved by carefully designed internal circuitry.
 
Being a single line and passive unit, it is a problem solver for changing two wire communication into a four wire system with separate in and outputs. 
 
With its Private "TO CALLER" button you can easily temporarily disconnect the caller from the mixer (broadcast) for private conversations.