The DN-A7100 is an A/V Surround Preamplifier. It is compatible with most advanced surround sound formats and because of its unique design, the DN-A7100 is ideal for any installation that requires high-quality, channel separated audio outputs especially those installations where adapting unbalanced RCA preamp outputs is completely unacceptable (and it always is!) or the extra weight of ill-purposed, unused consumer power amps is not needed. Many installations now require surround sound decoding. From big deployments with many power amps driving line array speaker systems to small boardrooms and home theaters with active monitor systems, the Denon DN-A7100 is the affordable, professional choice.