I own the Onkyo 605, and love it. The Yamaha is very good as well, but the guy who said one is better than the other is obviously biased. CNet gave the Onkyo 605, which is comparable to the Yamaha 661 a better rating... if that has any relevance. Each has their +'s and -'s. Anyhow, I did a ton of research on the subject and here's whatI can tell you...
The Onkyo 605 does have the ability to accept and/or decode all of the HD-Audio Codecs (Uncompressed PCM is prevalent on blu-rays, but True HD and DTS-MA/HD are there as well). However, all that is a moot point when it comes to the PS3. The PS3 sends the LPCM as it is, or decodes Dolby True HD into LPCM and sends it as that. The receiver will not be doing the decoding... so it is really only necessary to have an HDMI receiver that can accept LPCM.
The PS3 canNOT decode DTS-MA/HD,NOR can it send it to the receiver to decode. In fact, when I had done my research last April, there were NO players that could send the DTS-MA signal... which means there was no way that you would get the DTS-MA audio codec. Now I believe since that time there are a couple of high end Blu-ray players that can send the DTS-MA signal, but it is still very rare. What the PS3 does do is extract a DTS Core which is better sounding than anything found on a DVD, but not quite up to par with Uncompressed PCM soundtracks and Dolby True HD. It does sound very good though from experience. Really, the actual utilization of DTS-MA audio is not here at this moment in time. It is not clear if the PS3 can be upgraded via a firmware update to be able to send the DTS-MA strea to a receiver to decode. It will take HDMI 1.3 to do that, which the PS3 has... but that doesn't necessarily mean the PS3 will be able to do so. DTS-MA is not one of the audio formats that the PS3 can decode (all others you will see the trademarkson your PS3, ie Dolby, Dolby True HD, DTS)
In that price range... the Yamaha 661 does have a clear advantage in that it can apply post processing / IIx to ANY 5.1 sources and turn it into 7.1 surround sound. The Onkyo 605 can not do this to the high def LPCM signals that the PS3 sends for the high def audio codecs. So for any of the "HD" audio found on blu-rays, you are going to get 5.1 even if you have a 7.1 set-up.
The problem with the Yamaha 661 is it's not quite as user friendly, and that it has had problems of resetting certain settings that one may want to calibrate. That can be a pain since the Yamaha does not have an on screen menu display via HDMI. A lot of people have reported that they have to set certain things up every time they turn their receiver on and off. But that being said, it's better suited for those who want 7.1 sound than the Onkyo.
If you have any more questions, feel free to PM me, and I'll try my best to answer. A great place to go for some answers is www.avsforum.com
Log in to comment