YAMAHA Home Theater Sound Receiver (RX-V377) [Excellent condition] The receiver works perfectly, no damage, no scratch, no dust. - 100 W x 5-channel output for powerful surround sound - Discrete amp configuration, HDMI with 4K Ultra HD pass-through for super high resolution images - Front panel USB digital connection for iPod and iPhone, YPAO sound optimization for automatic speaker set up - Extra Bass enriches powerful bass sound even with small speakers, virtual Cinema Front provides virtual surround sound with five speakers in front - Multilingual color OSD for improved visibility, ECO mode operation for about 20 percentage less power consumption The 5.1 Channel Speaker System (YAMAHA NS-SP1800BL) is also separately sold at $140 if want. Only direct dealing with cash at Quillen, Stanford University CA.