thestewman Posted March 13, 2013 Share Posted March 13, 2013 It was super cool watching the leds of each Mytek DAC light up on the stack of 3 Myteks while playing multichannel. The surround sound even in the smallish room they had to audition in was spectacular. Remarkably the best surround I have ever heard. I supplied them 2 Double DSD music files and the 3 units all displayed HDSD as they played the files. One thing I wish I had spent more time checking was the neat way Chebon manipulated the files in JRiver. And we found out, you did try it Ted_b didn't you ? That JRiver and Mytek will play the ISO DSD files without extracting the individual files. Link to comment
ted_b Posted March 13, 2013 Author Share Posted March 13, 2013 Direct ISO playback of multichannel content, DST-compressed or not, is quite doable in JRiver/Mytek. Jriver calls them file type "SACD" so browsing or creating views with ISOs is easy. However, it has huge cpu load issues (especially those with DST compression content, which are not easy to identify without first extracting some test files on the ISO) that I'm trying to get my arms around. I built a minimalist server (CAPSV2+) for good reason; keep it simple, keep it clean, keep it doing just 2 channel music serving. The idea of having this server now do decompression of DST, "unwrapping " of ISOs, etc is not something I am quite sure I want to do. That's my theoretical first impression. My real world first impression is that my CAPS doesn't have enough cpu horsepower to do it, and it freezes and coughs and wheezes. However, my CAPS V2+ was never intended to do multichannel in its design, so its place here is just for this prototype (and yet serving multichannel DSF has been flawlessly accomplished to-date). So, my first impression is this: direct multichannel ISO playback is cpu intensive and will require a bigger machine like a CAPS Zuma or non-CAPS design. I have yet to determine if it even sounds as good as extracted DSF files, and its clear that the metadata is not as good out of the box (and likely player specific). But it would certainly save time and storage. "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
john925 Posted March 13, 2013 Share Posted March 13, 2013 I've ripped some SACD from RCA(three channel SACD) and Pentatone RQR(four channel SACD). But when I drag the ISO file into JRiver, it showed those tracts are "5" channels. Does anyone encounter this situation? I only got two myteks now, which should be able to play 4 channel DSD. Link to comment
ted_b Posted March 13, 2013 Author Share Posted March 13, 2013 John, As I said in my several PMs to you, JRiver sees them as 5.1 files even though only 3 (or 4) channels are actually used and active. I am working through the issue of having only 2 DACs, as I said. Give me some time. This is all experimental. Right now i know 3 DACS works; not exactly sure why 2 don't..my first theory is that JRiver wants to downmix to 4 channels, and downmixing is a DSP (i.e PCM) activity. Just a first hunch. "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
john925 Posted March 13, 2013 Share Posted March 13, 2013 John,As I said in my several PMs to you, JRiver sees them as 5.1 files even though only 3 (or 4) channels are actually used and active. I am working through the issue of having only 2 DACs, as I said. Give me some time. This is all experimental. Right now i know 3 DACS works; not exactly sure why 2 don't..my first theory is that JRiver wants to downmix to 4 channels, and downmixing is a DSP (i.e PCM) activity. Just a first hunch. Ted, Thanks for your reply. I think I must have missed what you've mentioned. I hope that the fix about the multi channel recognition could be seen on JRiver. Link to comment
dlbeck Posted March 14, 2013 Share Posted March 14, 2013 Any idea when the new firmware will be available for the Mytek that allows a person to sync the clocks via USB? Link to comment
ted_b Posted March 14, 2013 Author Share Posted March 14, 2013 Have you contacted Michal or Chebon. I would assume soon, since it is working fine in testing overall, with one issue to smooth out. "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
tailspn Posted March 21, 2013 Share Posted March 21, 2013 Ted, have you looked into .dsf as a multi-channel format? It's specified as stereo only, and I have not tried to convert a 5 channel .dff file with Audiogate to see what it does with it. It's on a machine currently taken apart. Link to comment
ted_b Posted March 21, 2013 Author Share Posted March 21, 2013 Ted, have you looked into .dsf as a multi-channel format? It's specified as stereo only, and I have not tried to convert a 5 channel .dff file with Audiogate to see what it does with it. It's on a machine currently taken apart. Tom, as per above..all I use is DSF in multichannel. The files are huge (cuz they are decompressed DST often) but play wonderfully even on my minimalist CAP V2+. And they have all the tags, etc. JRiver sees them perfectly. Conversely, i tried playing ISOs directly but my small server chokes on them cuz 90% of the time they are requiring the cpu to do DST decompression, which it's not built for that kind of load. Maybe evn a RAM increase would help, but what the hell...storage is cheap.. "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
Miska Posted March 21, 2013 Share Posted March 21, 2013 Ted, have you looked into .dsf as a multi-channel format? It's specified as stereo only, and I have not tried to convert a 5 channel .dff file with Audiogate to see what it does with it. It's on a machine currently taken apart. No it's not stereo-only, DSF supports mono, stereo, 3.0, quad, 3.1, 5.0 and 5.1... DFF can support the same, but also in addition 2.1. So both DSD file formats are perfectly ready for any pretty much any channel configuration up to 5.1. (so all the same as SACD) Signalyst - Developer of HQPlayer Pulse & Fidelity - Software Defined Amplifiers Link to comment
tailspn Posted March 21, 2013 Share Posted March 21, 2013 Thanks guys! I was reading the DSD Disk spec, which as I understand it, was the genesis for .dsf, and that's 2 channel only. Then AudioGate should be able to do the 5 channel conversion from .dff to .dsf. Thanks again! Link to comment
ted_b Posted March 21, 2013 Author Share Posted March 21, 2013 Thanks guys! I was reading the DSD Disk spec, which as I understand it, was the genesis for .dsf, and that's 2 channel only. Then AudioGate should be able to do the 5 channel conversion from .dff to .dsf. Thanks again! I'm not sure Audiogate can convert more than 2 channel files. i could be wrong; never needed to. "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
tailspn Posted March 21, 2013 Share Posted March 21, 2013 I'm not sure Audiogate can convert more than 2 channel files. i could be wrong; never needed to. If you have it handy, could you try it for me? Thanks Link to comment
tailspn Posted March 21, 2013 Share Posted March 21, 2013 It's not a big issue. Pyramix 8 with DSD support is due out for release mid April, and it does support .dsf now, in addition to .dff. I just have a few projects I'd like to complete before 8's release. Link to comment
ted_b Posted March 21, 2013 Author Share Posted March 21, 2013 If you have it handy, could you try it for me? Thanks Yep, tried it. 1 and 2 channel only, sorry. "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
tailspn Posted March 21, 2013 Share Posted March 21, 2013 Thanks Ted, I'll be waiting for Pyramix 8 then. I appreciate your resolving this issue for me Tom Link to comment
john925 Posted March 24, 2013 Share Posted March 24, 2013 Any relasese from mytek to support multichannel DSD coming soon? Link to comment
dlbeck Posted March 28, 2013 Share Posted March 28, 2013 Any idea when the new firmware will be available for the Mytek that allows a person to sync the clocks via USB? Ted - I haven't heard from anyone. Have you heard any news on this topic? Thanks. David Link to comment
ted_b Posted March 28, 2013 Author Share Posted March 28, 2013 No news yet, but remember, mine was early beta. So, simply use the existing firmware and drivers (or ask Mytek for the beta if clock synching is mandatory). "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
dlbeck Posted March 28, 2013 Share Posted March 28, 2013 Thanks Ted. Do your Myteks get very warm stacked on top of each other? I have the two stacked and just wondering if it would be an issue. Mine feel pretty warm but I'm out of real estate :-) Link to comment
ted_b Posted March 28, 2013 Author Share Posted March 28, 2013 No they are fine. But they have plenty of ventilation too. "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
mytek Posted March 31, 2013 Share Posted March 31, 2013 Hi Ted and everybody Pls see this video explaining the same DSD surround setup as shown at Mytek Room at Axpona 2013 in Chicago Best regards, Michal at Mytek Link to comment
ted_b Posted March 31, 2013 Author Share Posted March 31, 2013 I am helping David (dlbeck) on his setup, so i threw this picture together to make a little more sense. Firmware and driver are beta but will be released soon. They fixed a PCM channel swap issue we were having (easily remedied in JRiver but better not to have). "We're all bozos on this bus"....F.T. My JRIver tutorial videos Actual JRIver tutorial MP4 video links My eleven yr old SACD Ripping Guide for PS3 (needs updating but still works) US Technical Advisor, NativeDSD.com Link to comment
rsowen Posted April 9, 2013 Share Posted April 9, 2013 [ATTACH=CONFIG]4963[/ATTACH] Interesting. Keeps it asynchronous I suppose at the cost of some setup, an option to run all in sync mode might be nice. I think this has inspired me to create my own single board multi-channel DSD demo... Link to comment
Yogui Posted May 25, 2013 Share Posted May 25, 2013 Hi, So, any news? Is it ready to public release? Thanks! Synology DS1815>Cisco Switch>CAPS Pipeline Win7/10 x64 > Foobar/AlbumPlayer/JRiver MC > ASIO > Dac: exaSound e28 > Speakers: Focal SM9 and Twins Be6 in 5.1 > HeadAmp: Woo WA22 > Cans: HD800 (Bal)/Focal Uthopia > Portable: Iphone X> Shure SE530PTH Link to comment
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