At the top of the DN-A7100 feature list is its 8 true balanced line-level outputs. In many professional applications, the main feature utilized in any AV switching product is its ability to decode digital surround sound signals and output them to their specific speaker output.The DN-A7100 is no exception. It is compatible the 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.

Used Denon DN-A7100 preamplifier. Surround sound 7.1, Dolby pro logic IIx, for home theater. Tested and working digital audio and hdmi i/o. Did basic output test as I understand it: tone test and Tape analog input with audio signal. XLR output pins show measurable voltage on all 8 connections with audio signal ~0.2-1.2VAC range hot to cold pin with digital multimeter. Otherwise just used it as pass-through/AV hub. Selling as-is. Has a few case dings and general wear from use see images. Comes with power cord.