Watch out!!! every one of the B&K HT receivers we ever sold failed in one way or another. There was an option where you could install a Dolby board that would accept the first generation of Dolby Digital 5.1 or 7.1 decoding. It also has the most sophisticated logic system so you can enjoy many different forms of sound. 3.1 for instance or 2.1. I have for gotten if there is a 7.2 option but I don't think so. It also had an option where you could remove peaks in sub woofer response. They were FET amps that ran very warm so they need a lot of air circulation. We dropped the line in late 1990's because they wouldn't back up their equipment thoroughly. If a customer couldn't describe all the issues when he brought the unit in , when the units came back from the factory there might be the same issues left un repaired. They didn't check the units out thoroughly and wouldn't pay us to do it for them out of warranty.. There were delivery issues too. Our former Mcintosh rep was the B&K rep also and he dropped the line, too. That all said when working properly they were one if not the best sounding HT Receivers made. They easily out performed, Yamaha, Sony, Sony ESS, Marantz, Mitsubishi. The sound reminded me of Sansui Quads with a little better top octaves. As much trouble as we had with the HT recievers, we had absolutely no problems with any of their separate multi channel amps or separate Preamps. We sold a lot of the HT processors with QSC amps using their plug digital EQ, compressor limiter modules and never had issues. Plus we could voice the sound, start compression and limiting early to protect speakers, something you couldn't do with the HT receivers or with B&K Multi channel amps. We did use B&K multi channel amps for distribution sound systems for large homes, meeting rooms and back ground speaker systems in Hotels and convention spaces in addition two the two channel amps for stereo systems with B&K stereo pre-amps, again without issues. Even the stereo receivers worked perfectly. It was the HT receivers that gave us the headaches.