3-in-1 Recorders: Are you shopping for a 3-in-1 recorder? We stock series of professional voice recorders that can also be connected to land line, to monitor voice or audio phone recorderings. To monitor what your cheating spouse has to discuss in the car with his mistress, our professional Denpa digital voice recorder (4GB) model can record audio discussion for up to 560 hrs. You can also use the recorder to record cell phone conversation with the aid of spyemporium.com gadgets. Our wired concrete microphone can be used to eavesdrop on your teenage boy or girl for educational purposes.