Pioneer has unveiled its new line of 5.1 channel A/V receivers, which should be rather attractive to audiophiles out there. The VSX-520-K ($229) and VSX-820-K ($299) both feature 3D ready for Blu-ray 3D with HDMI v1.4, as well as wireless Bluetooth transfers, allowing you to stream music directly from your Bluetooth-enable device. The VSX-820-K features the “Works with iPhone” certification, so you can pick this up with the confidence knowing that you shouldn’t have any problems hooking it up with your iPhone. Pre-orders for both these models are currently available at Amazon, and should be available at national and regional retailers from March 2010 onwards. In case you were wondering, both models are finished with a premium glossy black color. Press release.