For those that are looking for an excellent digital interface, try the SignaLink USB interface. The hookup is easy and the performance is excellent. The strong point is the built-in sound card that makes adjusting the correct transmit and receive levels very easy. I have had the major interfaces: RASCAL, RigBlaster Pro and one or two others. The RigBlaster pro requires many cables to hook up your computer, radio and any opitional speakers. I use the audio from my radio to monitor the band. The SignaLink USB uses twos cables: the usb from computer to interface and a cable to your radio.