I trying to decide if I should use a TX-NR515 or UPA-700? The speakers I am using are : Pioneer SP-BS22-LR, a Pioneer SP-C22 and a Pioneer SW-8MK2. At first glance, the A/V receiver right? Well, I have it and am about to return it and get the UPA-700. Tell me I am wrong or right! Here is the history: Had a $70 5.1 computer speaker setup. The speakers died, and it is time to upgrade to some better speakers. I like the speakers, but they are still returnable too, incase 6 ohm speakers are crud for some reason I dont know yet! so, speakers aside, how do I power them? Here is my setup: I have a computer with HDMI out*. I have a projector I use as a TV hooked up to my computer. I have the Pioneers hooked up to the TX-NR515. My computer has spdif out, 5.1 sound over 1/8th jacks in addition. This is my computer. As far as I can tell, I am using my TX-NR515 as nothing more than a UPA-700. Why not use a much, much better amp if all I am using the TX-NR515 is as an amp? Plus to using TX-NR515 1) HDMI to transmit audio over And the UPA-700 would lose those plus's 1) using 1/8th jacks to transmit over instead of HDMI Am I right on my assumptions? Am I crazy to switch from TX-NR515 to a UPA-700? *HDMI and S/PDIF, I have both connected. I started a few songs, and during the songs switched from optical to HDMI. Over my TX-NR515 they both sounded nearly the same. Optical was slightly quieter, that is about it. I know on paper they are the same, but I got to test it. Sounded the same.