YAMAHA RX-V677B 7.2ch AV Network Receiver with 90W x 7 Power, Built-in Wi-Fi, 4K Up-Scale 7.2-channel Wi-Fi Built-In high performance Network AV Receiver. Supports the latest HDMI version, 4K upscaling, Air Play® & HTC Connect™. YPAO R.S.C. & YPAO Volume ensure optimum system sound quality & balance. Multi-zone operation allows system expansion. * 7-channel powerful surround sound * --- 150 W per channel (4 ohms, 1 k Hz, 0.9% THD, 1 ch driven [ European Model]) * --- 90 W per channel (8 ohms, 20 Hz-20 k Hz, 0.09% THD, 2 ch driven) * --- 150 W per channel (8 ohms, 1 k Hz, 10 % THD, 1 ch driven, JEITA) * Air Play, Napster®*, Spotify®*, Pandora®*, JUKE* 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 * HTC Connect™ for music streaming from HTC Connect™ compatible smartphones * The latest HDMI version support for 4K 50 / 60p input * HDMI (6 in / 1 out) with 4K Ultra upscaling, 3D, Audio Return Channel & MHL support * HDMI input on front panel, USB (Universal Serial Bus) Digital Connection for iPod, iPhone & iPad * YPAO Reflected Sound Control (R.S.C.) sound optimisation for automatic speaker setup * YPAO Volume to ensure natural sounds even at low volume * Virtual CINEMA FRONT provides virtual surround sound with 5 speakers in front * Dialogue Lift & Dialogue Level Adjustment for natural dialogue & vocals * Advanced GUI on-screen display with (English, German, French, Spanish, Russian, Italian, Japanese & Chinese) * Multi-zone audio support (Zone 2) * ECO mode operation for about 20% less power consumption