Thanks for the response. I'm no audiophile by any means, you know . . . "the lows wanted to be crisp and punchy but instead ended up laying on the floor in a tired heap while the highs gasped desperately for air from being strangled by the otherwise mild mannered midrange" type of thing. However, I do like quality components and the Aventage series seems to fit that standard. . .There are a number of differences which provide reasonable justification for the price difference - especially the DAC chipset and perhaps the amplifier circuit design. Whether you notice or prefer the differences is ultimately the answer to your question.
I actually picked up the RX-A730 last year, which is very close to the RX-A830. Had I known about the ESS Sabre DACs, I probably might have sprung for the RX-A1030. The networking, DLNA streaming, 24/192 digital, and good mobile apps are included with all Aventage models and sonic performance make these wonderful A/V receivers.
Sorry, I tried to post links to the Aventage model comparisons, but my post count must be higher for that capability (really?!?).
10W/channel more power
Symmetrical Amplifier Layout (Symmetrical amp design potentially lowers distortion, better handling of even harmonics)
24bit/192KHz DAC: ESS Technology ES9006 SABRE™ Premier Audio DAC (I really love ESS Sabre DACs, have ESS Sabre³² Reference 32-bit 8-channel audio DAC in my Benchmark DAC2, it is very detailed, resolved but smooth)
Phono Input (If you spin vinyl, MM phono support is nice to have)
Discrete Amplifier section
Virtual Cinema DSP: AIR SURROUND XTREME (not something I need)
24bit/192KHz DAC: Burr Brown (specific chip unspecified, but BB 24/192 are good DACs, and some may like the way this sounds better)
So, a couple of questions. Can you really hear the difference in the BB and the ESS DAC's to the point of a "Wow" factor? If you use your 730 for movies, are you satisfied with its' performance or would more power be beneficial?
The reason I ask is due to the feedback I've gotten at local stores from knowledgeable individuals with the understanding that they are not going to sell me either model. Their conclusion is that I wouldn't be satisfied with the 830 but that opinion seems to be based on my owning the rxv1300. . .