Quote:
Originally Posted by TrebleClef 
So, if using the highly heralded OPPO DAC, we must add a Processor down the chain to get multichannel, correct? The OPPO DAC only delivers 2.0 audio.
I understood UPTHREAD (yes, I've read the entire thing), that this in some way would compromise or circumvent the high quality output from the onboard OPPO DAC.
Still learning....Thanks.

Quote:
Originally Posted by Bob Pariseau 
Yes, the 105 can play 5.1 FLAC 96KHz 24-bit music files -- both from an attached hard drive and over your in-house network.
People have reported some issues with a type of meta-data sometimes found in them which rejoices in the name "ID.3 tags", which are not really SUPPOSED to be in there, I gather. (They are actually for a different file format.) There are evidently easy ways to strip those with utilities if needed.
Quite a few of the posters here are happily using multi-channel FLAC files, so I expect some will pop up with answers if you need more details. --Bob

Yes, the 105 can play 5.1 FLAC 96KHz 24-bit music files -- both from an attached hard drive and over your in-house network.
People have reported some issues with a type of meta-data sometimes found in them which rejoices in the name "ID.3 tags", which are not really SUPPOSED to be in there, I gather. (They are actually for a different file format.) There are evidently easy ways to strip those with utilities if needed.
Quite a few of the posters here are happily using multi-channel FLAC files, so I expect some will pop up with answers if you need more details. --Bob
So, if using the highly heralded OPPO DAC, we must add a Processor down the chain to get multichannel, correct? The OPPO DAC only delivers 2.0 audio.
I understood UPTHREAD (yes, I've read the entire thing), that this in some way would compromise or circumvent the high quality output from the onboard OPPO DAC.
Still learning....Thanks.
I didn't want to quote all of your posts, but it looks like you are still getting your head around how the audio works. Not surprising, as it can certainly be confusing.
First off, if you are listening to the Analog outputs of the 105 then you are using the fancy DACs in the 105. Always.
The DACs are "Digital to Analog Converters". Their job is to convert a digital audio stream into Analog audio for output on the Analog audio jacks. No matter HOW you play audio on the 105, if you are listening to its Analog audio output jacks (including the Headphone jack), then you are listening to the output of its fancy DACs.
Now, the audio you are trying to play is recorded digitally in one of various file formats. To play audio, the file you select has to be decoded from its file format and "rendered" into a simpler digital audio stream that can be handled by the DACs in the 105. This is where your confusion comes from as there are multiple ways to do that.
The simplest way is to play a shiny disc or select a file off a hard drive directly attached to the OPPO. When you do that it is the *OPPO* which decodes the file format, renders that into the appropriate digital audio stream and directly passes that to its DACs to generate Analog audio output.
The OPPO is capable of playing numerous music file formats this way (but by no means every such file format in existence), including multi-channel file formats up to 7.1 channels at 192KHz 24-bit.
Directly attached hard drives are attached using the "normal" USB sockets of the 105 -- not the special, Asynchronous USB DAC Input.
Another way would be to play the file on your computer -- as for output to speakers directly attached to the computer.
When you do that is it the *COMPUTER* which decodes the file format, renders that into the appropriate digital audio stream and directly passes that to ITS OWN DACS -- DACS in the sound card in the computer -- to generate Analog audio output to the speakers attached to the computer.
But as you can imagine, many people are not satisfied with the quality of the audio when they do that. No matter how good a program they use in the computer to decode and render the audio file, they are limited by the quality of the analog output stage of the computer's own sound card -- the DACs installed in the computer.
And THAT is where the Asynchronous USB DAC Input of the 105 comes into play. Because if you run the appropriate USB cable from the Computer to that USB DAC Input of the OPPO, and have the appropriate driver in the computer, the OPPO can REPLACE the sound card in the computer! It is still the computer -- more specifically whatever sound playback program you are running in the computer -- which decodes the music file and renders it into the appropriate digital audio stream. But now instead of sending that to the Computer's own sound card it is, instead, sending that stream out the USB cable to the Asynchronous USB DAC Input of the 105 -- which sends it directly to the fancy DACs in the 105 for conversion to Analog output on the 105's own Analog output jacks.
That connection -- that very special connection for replacing the function of the sound card in the computer -- is limited to 2.0 LPCM 192KHz 24-bit.
That is, even if the computer software was capable of playing a multi-channel audio file (decoding it and rendering it into more than 2.0 channels of digital audio) -- the Asynchronous USB DAC Input of the OPPO can still only accept 2.0 LPCM input. The OPPO can replace a STEREO sound card in the computer but not a multi-channel sound card.
So if you want to play multi-channel audio, you DON'T DO IT THIS WAY! Instead you get your audio into a music file format the OPPO knows how to decode and you get the FILE into the OPPO -- not a digital audio stream already rendered by some music playing software on your computer.
SO, perhaps it is not convenient to get your music files onto a shiny disc or onto a directly attached hard drive. And perhaps you need to include the flexibility to play multi-channel audio.
In that case you need to explore the in-house, network playback options in the 105.
These come in THREE flavors:
1) The 105 can access "SMB Shares" which you set up on a server on your in-house network. Once connected to the SMB Share (over your house network), the OPPO lets you browse it and playback files from it basically the same way as if it were a directly attached hard drive.
2) The 105 can access files offered up by a "DLNA Server". A DLNA Server -- software that runs on a file server on your network -- presents music files in a somewhat trickier fashion. That's because the typical DLNA server can be configured to understand what the OPPO can decode, and can "transcode" other music file formats into something the OPPO can handle. There are other services that DLNA servers provide such as formatting/sorting your file lists and presenting additional meta-data to the OPPO such as album art. There are lots of different DLNA server programs out there -- some free, others you buy -- and all of them will have a learning curve in terms of how you install them and configure them for most convenient use. But the actual playback of music is very similar to playing files from a directly attached hard drive. You browse the files using the OPPO's own, on-screen browser, and select which file you want to play next.
3) The 105 can ALSO serve as a "DLNA Digital Media Renderer". Again this involves a "DLNA Server" set up on some file server on your house network. But this time it is the DLNA server that finds the OPPO and *SENDS* files to it to play! Note the difference from attached hard drive playback or (1) and (2) above: You no longer use the browser in the OPPO to find the files you want to play. Instead you use the facilities of the DLNA server itself to select files for playback which get SENT to the OPPO. The piece of the DLNA server that lets you do this is called a "DLNA Digital Media Controller", and the latest advance in such stuff is Digital Media Controllers that let you use a separate device for doing the control -- such as an Apple iPad.
You'd be forgiven for thinking that (3) -- Digital Media Render playback -- is the same thing as using the Asynchronous USB DAC Input, which is where we began above. Once again it is the computer (or a separate device like the iPad) which is being used to select the file to play, and the computer -- or the DLNA Digital Media Controller, to be precise -- which is sending the music to the OPPO.
But there's a major difference: In Digital Media Renderer playback it is THE FILE which is being sent to the OPPO. It is the OPPO which is decoding that file and rendering it into the appropriate digital audio stream for sending to the DACs in the 105. So for example, you can play multi-channel files this way.
Contrast with the use of the Asynchronous USB DAC Input, where it is the Computer which is decoding and rendering the file and the resulting, rendered, DIGITAL AUDIO STREAM (*NOT* the original music file) which is being sent into that input and thus straight to the OPPO's DACs.
And that last bit is also an important difference. When using the Asynchronous USB DAC Input, the digital stream goes *STRAIGHT* to the DACs in the OPPO. Thus there is no chance for the OPPO to do any digital audio processing on it before the DACs do their thing.
But when you play *FILES* via a shiny disc, or via a directly attached hard drive, or via an SMB Share, or via a DLNA Server, or pushed to the OPPO by a DLNA Digital Media Controller, it is the OPPO which is decoding and rendering the file -- and thus all of the OPPOs audio processing features are available to adjust that audio before it gets -- as the last step -- sent to the 105's DACs for conversion to Analog output.
--Bob






















