TX-NR609 - 7.2-Channel Network A/V Receiver
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* HDMI Support for 3D Video and Audio Return Channel
* Marvell Qdeo™ 4K Upscaling and Processing
* Network Capability Delivers Internet Radio and Network Streaming
* THX® Select2 Plus™ Certified
* Audyssey DSX™ and Dolby® Pro Logic® IIz Add New Dimensions to Surround Sound
* Direct Digital Connection of iPod/iPhone via Front-Panel USB Port
* Onkyo Remote App for iPod/iPhone
TX-NR509 - 5.1-Channel 3-D Ready Network A/V Receiver
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* HDMI Support for 3D Video and Audio Return Channel
* Network Capability Delivers Internet Radio and Network Streaming
* Direct Digital Connection of iPod/iPhone via Front-Panel USB Port
* Onkyo Remote App for iPod/iPhone
* Audyssey 2EQ for Room Acoustic Correction
* Convenient Overlaid On-Screen Display via HDMI
* Optional iPod Dock / HDradio module via proprietary U.Port
TX-SR309 - 5.1-Channel 3-D Ready Home Theater Receiver
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* HDMI V1.4a repeater , 3in / 1out, 1080p compatible
* Support for 3D Video and Audio Return Channel
* TrueHD/DTS-HD decoding to support the latest Blu-ray technology
* 4 DSP Gaming Modes: Rock, Sports, Action, and Role Playing
* On-Screen Display via HDMI
* Burr-Brown DACs for improved jitter and clearer sound
Comparison Chart is Shared here.
http://www.docstoc.com/docs/73958065...NR509_TX-SR309
===================================
* HDMI Support for 3D Video and Audio Return Channel
* Marvell Qdeo™ 4K Upscaling and Processing
* Network Capability Delivers Internet Radio and Network Streaming
* THX® Select2 Plus™ Certified
* Audyssey DSX™ and Dolby® Pro Logic® IIz Add New Dimensions to Surround Sound
* Direct Digital Connection of iPod/iPhone via Front-Panel USB Port
* Onkyo Remote App for iPod/iPhone
TX-NR509 - 5.1-Channel 3-D Ready Network A/V Receiver
===========================================
* HDMI Support for 3D Video and Audio Return Channel
* Network Capability Delivers Internet Radio and Network Streaming
* Direct Digital Connection of iPod/iPhone via Front-Panel USB Port
* Onkyo Remote App for iPod/iPhone
* Audyssey 2EQ for Room Acoustic Correction
* Convenient Overlaid On-Screen Display via HDMI
* Optional iPod Dock / HDradio module via proprietary U.Port
TX-SR309 - 5.1-Channel 3-D Ready Home Theater Receiver
============================================
* HDMI V1.4a repeater , 3in / 1out, 1080p compatible
* Support for 3D Video and Audio Return Channel
* TrueHD/DTS-HD decoding to support the latest Blu-ray technology
* 4 DSP Gaming Modes: Rock, Sports, Action, and Role Playing
* On-Screen Display via HDMI
* Burr-Brown DACs for improved jitter and clearer sound
Comparison Chart is Shared here.
http://www.docstoc.com/docs/73958065...NR509_TX-SR309