YAMAHA RXV577B 7.2ch Network AV Receiver with 80W x 7 Power, HDMI (6 in / 1 out) & 4K Ultra HD pass-through, Built-in Wi-FI 7.2-channel Wi-Fi Built-in Network AV Receiver supporting advanced features like Air Play®, Music Streaming services, HTC Connect™, AV Controller App Wireless Direct. Offers 4K Ultra HD pass-through, new Extra Bass function, & Speaker Zone B output to expand its versatility. * 7-channel powerful surround sound * 115 W per channel (6 ohms, 1 k Hz, 0.9 % THD, 1 ch driven) * 80 W per channel (6 ohms, 20 Hz-20k Hz, 0.09 % THD, 2 ch driven) * 135 W per channel (6 ohms, 1k Hz, 10% THD, 1ch driven, JEITA) * Air Play, Spotify®*, Pandora®* music streaming service & AV Controller app * * Music service availability varies by region. * FLAC, WAV 192k Hz / 24-bit, Apple Lossless 96k Hz / 24-bit playback * Gapless playback compatibility allows play without interruption * HTC Connect™ for music streaming from HTC Connect™ compatible smartphones * HDMI (6 in / 1 out) with 4K Ultra HD pass-through for super high resolution images * Front panel USB (Universal Serial Bus) Digital Connection for iPod & iPhone * YPAO sound optimisation for automatic speaker setup * Extra Bass enriches powerful bass sound even with small speakers * Virtual CINEMA FRONT provides virtual surround sound with 5 speakers in front * Assignable amplifiers for bi-amp connection & Speaker Zone B Function * Two subwoofer outputs (simultaneous outputs) * Multi language colour OSD for enhanced visibility (English, German, French, Spanish, Russian, Italian, Japanese & Chinese) * ECO mode operation for about 20% less power consumption