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Author Topic: Phasure NOS1 24/768 async USB DAC  (Read 90142 times)
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Eric
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« Reply #30 on: August 09, 2011, 01:07:54 pm »

You now can shut off either whenever you like it. yes

And that's the way I like it....... T H A N K S !!

Cheers, Eric
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3.2GHz CPU, 8GB RAM, XXHE 1.186a, W7x64 SP1 Ultimate on 2.5" 10Krpm SATAII spinning disk, 8GB RAM / KS:Phasure NOS1 Out 4.0 / #4 Engine / Adaptive / Buffer 4096 / ClockRes 1ms/ Stop All Services / Monitor Off / SFS = 0.4 / not Invert / No XTweaks / Playback Drive = External USB3 (USB powered) HDD / Unattended/ Minimize OS / Peak Ext / ArcPredict / PA- / Q1,-,3,4,5=14,-,0,0,0
Control Panel: Sample Rate: 352.800kHz/ USB Buffer Size: 8ms
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« Reply #31 on: August 09, 2011, 03:19:03 pm »

Anybody heard the latest and greatest all that NOS1 USB version in their own system who can comment on its performance versus the previous version which appeared to be a bit sterile sounding for many?

earflappin, nice to have you back!

I can see how my first post in the thread http://www.phasure.com/index.php?topic=1549.0 might be interpreted as the NOS1 sounding 'sterile'. However, I was then using KS Adaptive. It became quite clear that the NOS1 sounded more 'organic' (and better) with KS Special.

Of course, everything in the aforementioned thread relates to the 'original' NOS1. As soon as I get hold of a 24/768 async USB NOS1 (not sure how long this will take), I'll let you know what I think...

Mani.
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Main System: Phasure NOS1a B75 G3  -> Thöress/Elrog 300B mono amps -> Tune Audio Anima horn speakers
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« Reply #32 on: August 09, 2011, 10:55:04 pm »

Peter,

Absolutely great news about the fix for DC off sets, sounds like you have been on a mission to bottom the problem, and the effect of insulating shoes  Happy who would have thought !

Even more to look forward to now, the new USB interface, quieter output stage and listening without the TVCs,  drool Cannot wait, but as Mani says no rush.

Nick.

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earflappin
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« Reply #33 on: August 09, 2011, 11:49:47 pm »

Mani, thanks for the welcome back and willingness to share your experiences with the new NOS1 USB upgrade.  I am very much looking forward to it.   

Peter, my apologies if the word "sterile" offended. It was not my intent!  It was not a word I had seen posted in NOS1 reviews, but one I used based on the comments I had read.  I was looking for a single word that kind of summed up what I had read.  I agree this word is generally considered a negative.  I mean who says, "yes, I'm looking for the most sterile sounding DAC I can"!   Going back and reading the reviews more carefully I can see this is not the essence of what was written.  Clean, clear, resolute....yes, but not lacking musicality.

In any case I am anxiously waiting for the NOS1 USB reviews.  I'm still running a Mac Mini (oh blasphemy you say - but I can run Fusion on it of course) as music server with Fidelia (the best Mac-based player I've heard) and running async Firewire to my Metric Halo LIO-8.  The best digital I've heard in my system to date.  I also am set up to run active or passive crossovers. 

BTW, someone mentioned about trying a gainclone amp.  Let me say that I am running a Class D Audio SDS-224 amp with a discrete linear PSU with a 12ns ultra fast rectifier and Jensen 4 pole caps and this thing is simply amazing.  It punches way, way above it's modest price tag and is very easy to build.  I know some DIY'ers here in the USA that put it's performance about the gainclones they owned. 
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PeterSt
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« Reply #34 on: August 10, 2011, 12:16:44 am »

David - maybe I should have been the one greeting you explicitly, but I wasn't sure whether it would be received well. But ok, hey, how are you doing !!?

I can tell you, I have been about to post a (stupid) question about what Mac software to use for the NOS1 - just because it needs that "filtering". But as I just saw (CA) you are excited about Fidelia. So, I guess I will go that direction for trials (including the "upsampling"  Happy).

The fact that you just mentioned the Jensen 4 poles makes me even more excited, because I just today decided to go for BHC's (that other 4 pole brand) for something new I'm heading to. Not for their official purpose, but for something new and "exciting".
Crazily expensive though (30 euro range pp).

I guess you read this one : Gainclone heaven ?
We may all end up in some same boat. But things sure are changing ...

Best regards,
Peter

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earflappin
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« Reply #35 on: August 10, 2011, 02:36:46 am »

Peter, it's great to reconnect!  Thanks for your post.  I was away from audio for quite a bit as I had my speakers rebuilt and my system was down, but have periodically checked on your progress with the NOS1.

First, let me say congratulations on bringing the NOS1 to market.  This was a HUGE undertaking.  I don't think most people appreciate the complexity of designing a DAC from the ground up.  I honestly wondered (only sometimes  Happy) if you would make it, but my sense was that you had the passion, determination, smarts and understanding spouse! to make it happen.  I can't wait to try one.  I guess I need to read up on the process for ordering one.  What's your ship time like these days?

Yes, after comparing Pure Music, Audirvana and Fidelia I would rate Fidelia as a clear step ahead of the others in terms of PRaT - it just sounds more like live music.  I'm not that surprised as the designers are music guys first and software people second.  I'm not sure how good their real-time upsampling capability is as I don't use it.  I'm pleased that there will be a native Mac player that will work with the NOS1 and that should increase your available market as well.

Regarding the gainclone, I read the thread you posted.  Interesting.  Below is a link to a review from a guy named "posideonsvoice" who is an accomplished DIY'er who built the Class D Audio SDS amp I referred to and who had previously used a gainclone as his main amp.

http://classdaudio.com/review/product/list/id/186/

Yes, those 4 pole caps are expensive!  But, unlike many so called high end parts, they deliver the goods big time. 
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« Reply #36 on: August 10, 2011, 06:04:53 am »

Peter, I tried the real-time upsampling capability of Fidelia and can report it works perfectly.  You can adjust on the fly - it mutes and resumes without nasties - making comparisons easier. 
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« Reply #37 on: August 10, 2011, 12:56:47 pm »

Hi Peter, just wondering if you did any testing regarding the length and quality of the usb cable between the NOS USB and the computer. With my old setup, JKenny USB/SPDIF converter to MSB DAC, the length of the cable made a very significant difference. Thanks.
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« Reply #38 on: August 13, 2011, 07:30:48 pm »

USB3 ? I wouldn't know why. There's 8x 32/384 (24/384 output) and it really is enough. It would only allow 8x 32/768 as an addition, but more has to change because the on-board processing will have ran out of bandwidth then. Also, keeping in mind this is all meant to be an 8ch XOver, 768 will be too much for everything. Well, that's what I estimate.

Peter,  Happy

What do you mean with above? (red)

 bye
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OriginAE x11v Home build HTCP ~ Asus x79 mobo 3930K 12 core underclock 500 MHz,
16GB, *Windows 10 Pro 64 bit build 14393.0* *from RAM*, music on music server / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.10*  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core *3-5* / Not Switch Processors during Playback = Off/ Playback Drive *none* (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = *43* / Nervous Rate = 1 / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = Not the best (OS from RAM issue) / Time Stability = Off (OS from RAM issue) / Custom Filter Mid 705600 / -> USB3 (Silverstone both sides isolated = Sw#3 of NOS1a = Up) -> *Clairixa USB 15cm* -> Intona Isolator -> Clairixa USB 0.70m -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink ->> Metrum Amps ->> Metrum Acoustics ESL Open Baffle.
PeterSt
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« Reply #39 on: August 13, 2011, 07:48:11 pm »

Gerard - too many cpu cycles.
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*XXHighEnd Mach II Stealth LPS PC -> Xeon E5 2040v4 with Hyperthreading On (20 cores)* @~720MHz, 32GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/0/1/0/ Q1Factor = 10 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 120  (max 120) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = 43 / Nervous Rate = 100 / Cool when Idle = n.a / Provide Stable Power = 0 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> *Clairixa USB 1m80* -> *Phisolator* 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere (also from the PC).

For a general PC :
W10-10586.0 - May 2016 (2.05+)
*XXHighEnd PC -> I7 3930k with Hyperthreading On (12 cores)* @~500MHz, 16GB, Windows 10 Pro 64 bit build 10586.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 0.10  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = *43* / Nervous Rate = 1 / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> Clairixa USB 15cm -> Intona Isolator -> Clairixa USB 1m80 -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
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Gerard
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« Reply #40 on: August 13, 2011, 07:49:54 pm »

Gerard - too many cpu cycles.

For this you mean? 8x 32/768 or 2x 32/768 as well.
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Januari 2017 XX 2.05
OriginAE x11v Home build HTCP ~ Asus x79 mobo 3930K 12 core underclock 500 MHz,
16GB, *Windows 10 Pro 64 bit build 14393.0* *from RAM*, music on music server / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.10*  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core *3-5* / Not Switch Processors during Playback = Off/ Playback Drive *none* (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = *43* / Nervous Rate = 1 / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = Not the best (OS from RAM issue) / Time Stability = Off (OS from RAM issue) / Custom Filter Mid 705600 / -> USB3 (Silverstone both sides isolated = Sw#3 of NOS1a = Up) -> *Clairixa USB 15cm* -> Intona Isolator -> Clairixa USB 0.70m -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink ->> Metrum Amps ->> Metrum Acoustics ESL Open Baffle.
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« Reply #41 on: August 13, 2011, 07:53:56 pm »

8 x 32/768.

2x 32/768 will work.
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W10-14393.0 - December 23 2016 (2.07)
*XXHighEnd Mach II Stealth LPS PC -> Xeon E5 2040v4 with Hyperthreading On (20 cores)* @~720MHz, 32GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/0/1/0/ Q1Factor = 10 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 120  (max 120) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = 43 / Nervous Rate = 100 / Cool when Idle = n.a / Provide Stable Power = 0 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> *Clairixa USB 1m80* -> *Phisolator* 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere (also from the PC).

For a general PC :
W10-10586.0 - May 2016 (2.05+)
*XXHighEnd PC -> I7 3930k with Hyperthreading On (12 cores)* @~500MHz, 16GB, Windows 10 Pro 64 bit build 10586.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 0.10  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = *43* / Nervous Rate = 1 / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> Clairixa USB 15cm -> Intona Isolator -> Clairixa USB 1m80 -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
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« Reply #42 on: August 13, 2011, 07:54:17 pm »

Hi Peter, just wondering if you did any testing regarding the length and quality of the usb cable between the NOS USB and the computer. With my old setup, JKenny USB/SPDIF converter to MSB DAC, the length of the cable made a very significant difference. Thanks.

Hey you ... Happy

I am using 20' (6 meters) of it right now. This distance to the iMac here.
haha
More won't work.

Peter

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For the Stealth LPS PC :
W10-14393.0 - December 23 2016 (2.07)
*XXHighEnd Mach II Stealth LPS PC -> Xeon E5 2040v4 with Hyperthreading On (20 cores)* @~720MHz, 32GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/0/1/0/ Q1Factor = 10 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 120  (max 120) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = 43 / Nervous Rate = 100 / Cool when Idle = n.a / Provide Stable Power = 0 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> *Clairixa USB 1m80* -> *Phisolator* 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere (also from the PC).

For a general PC :
W10-10586.0 - May 2016 (2.05+)
*XXHighEnd PC -> I7 3930k with Hyperthreading On (12 cores)* @~500MHz, 16GB, Windows 10 Pro 64 bit build 10586.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 0.10  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = *43* / Nervous Rate = 1 / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> Clairixa USB 15cm -> Intona Isolator -> Clairixa USB 1m80 -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere.

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« Reply #43 on: August 14, 2011, 02:02:19 pm »

Here are some experiences and opinions.
So far I haven't done any testing myself in this area. 

http://www.computeraudiophile.com/content/Best-USB-cable-use-between-computer-and-dac

Cheers,
Eric
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3.2GHz CPU, 8GB RAM, XXHE 1.186a, W7x64 SP1 Ultimate on 2.5" 10Krpm SATAII spinning disk, 8GB RAM / KS:Phasure NOS1 Out 4.0 / #4 Engine / Adaptive / Buffer 4096 / ClockRes 1ms/ Stop All Services / Monitor Off / SFS = 0.4 / not Invert / No XTweaks / Playback Drive = External USB3 (USB powered) HDD / Unattended/ Minimize OS / Peak Ext / ArcPredict / PA- / Q1,-,3,4,5=14,-,0,0,0
Control Panel: Sample Rate: 352.800kHz/ USB Buffer Size: 8ms
Amps: BD-Design bridged Gainclones
esimms86
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« Reply #44 on: September 02, 2011, 03:35:29 am »

Shifting gears for a moment here, I remember reading juanpmar's excellent posts on building a PC for XXHighEnd. My understanding now is that the asynchronous DAC does not make the same demands on the PC that the previous DAC version did. What does this mean for the listener looking to build a silent audiophile server to keep in the same room as the NOS 1? Is an atom-based system with less RAM feasible for use with the Phasure or should one still look to an Intel Sandy Bridge CPU with 8Gb of RAM? Is a 2010 mac mini acceptable with Audirvana and, alternatively, can you run XXHighEnd acceptably on a mac mini partition running Windows 7(?Premium/Professional/Ultimate)? Is Chris Connaker's Computer Audiophile c.a.p.s. v. 2.0 server an acceptable option for the async Phasure NOS? I know, questions and more questions for Peter in his non-spare time spare time(as we say in America).

Esau
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2010 mac mini running Windows 7 Professional N 64bit *SP1* and XXHE on SSD in Boot camp mode, mac os x Snow Leopard with Audirvana Plus also on SSD, music on  separate 2 Tb firewire La Cie HD / 8 Gb RAM/ Engine#4 *Adaptive Mode* / Q1/2/3/4/5 = *30*/0/0/0/0 (Dev.Buffer = *4096*) / ClockRes = *15ms* / Straight Contiguous / SFS = 170 / not Invert / Playerprio = Low / ThreadPrio = Real Time / Scheme = 3/ *Minimize OS = On*  / 24/768 Phasure/Is Phasure NOS1/ NOS1 async USB DAC, Driver v1.0.2 -> Marantz PM KI Pearl amplifier ->Gallo Strada/Gallo TR3 subwoofer
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