Engadget - We've seen Pioneer stuff its VSX line with 3D and Bluetooth goodness in the past; now, the Japanese outfit is unveiling its 2012 AV receivers portfolio in an attempt to widen its offerings. Starting with the lower-end models, the VSX-522 and VSX-822 are both packing 5.1 surround audio, while the main difference between the two is the lack of AirPlay and Bluetooth on the former.
