Yamaha HTR-5790 7.1-Channel Digital Home Theater Receiver (Black) (Discontinued by Manufacturer) 110 watts x 7 channels: front left/right, surround left/right, front center channel, and 2 rear-center channels Dolby Digital EX, Dolby Pro Logic IIx, DTS-ES Discrete 6.1, DTS Neo:6, and DTS 96/24 surround processing for rich, enveloping audio YPAO (Yamaha Parametric Room Acoustic Optimizer) with supplied microphone optimizes your system for your room quickly and easily 7 A/V inputs, 8 digital-audio inputs, 2 digital outputs; offers THX Select certification, Yamaha Direct ToP-ART technology, 40-station AM/FM presets Measures 17.125 x 6.75 x 17.1 inches (W x H x D)