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Author Topic: PC Tweak for NOS1 async USB  (Read 15166 times)
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PeterSt
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« Reply #30 on: November 28, 2011, 02:50:18 pm »

Yes. A while back I have been measuring someone's system+monitor, and the monitor generated a significant amount (of measurable) noise.
I forgot the ins and outs ...

Peter
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** Denote the latest changes.

W7 - February 9, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @*500MHz*, 16GB, Windows 7 Enterprise 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = *6*/-/1/1/1 / Q1Factor = *1* / Dev.Buffer = 4096 / ClockRes = 15ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.40* (max 320.00) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - *Persist* (this is for conveniency and sub 1.186a)  / No WallPaper / No OSD / No Running Time / Minimize OS / XTweaks : *Use Settings* - *64, 1, 1, 0, 1* / Time Performance Index = Optimal / Time Stability = On / Double Octo Arc Prediction Upsampling / -> USB3 (*Silverstone *both* sides isolated*) -> 24/768 Phasure NOS1 async USB DAC, Driver v1.0.3 (*16ms*) -> Orelo MKII Active Open Baffle Horn Speakers.
**Removed Switching Supplies from everywhere**

W8 - March 1, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @0.43GHz, 16GB, Windows 8 Pro 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 6/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = *0.5ms* / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.32* (max 120) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - Not Persist / No WallPaper / No OSD / No Running Time / 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 = On / Double Octo Arc Prediction Upsampling / -> USB3 (Silverstone both sides isolated) -> 24/768 *modded* Phasure NOS1 async USB DAC, Driver v1.0.3 (2ms - this is not guaranteed for the NOS1) -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere

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CoenP
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« Reply #31 on: November 28, 2011, 09:28:45 pm »

I get a lot of extra noise when I dim the monitor (I mean less luminous, not off).
Furthermore I found the monitor powerplug orientation and place on the powerstrip surprisingly audible.

Could it be me or do I see an aftermarket high-end-filter-monitor-decoupling-plugin-tool-opportunity here Wink?

regards, Coen
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Audo PC: Seasonic x-400 fanless atx psu, Gigabyte z68 mobo,i5-2500k (no IGP, simple 10Watt 512Mb video card) throttled back, megahalems passive cooling (no fans running), Corsair 16G 1333 DDR3 (running full speed), Silverstone USB3 PCIe card (connected to atx psu). Music on 2x WD Green SATA2 3Tbyte disks, OS on WD 10k 320Mb velociraptor. Power cable PE not connected, together with nos1 and poweramp in "audio" strip.

std USB2 AB cable, Phasure NOS1a USB (buf 4 ms) ->SE EL95 (0,8W triode)-> biwired QED cable-> Altec VOT 515-8G, 808, 511-E (700 Hz LR filter).

WIN7, 0.9z-9e (preferred) or 1.186i. very different settings.

WIN8: banned.
juanpmar
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« Reply #32 on: December 01, 2011, 03:03:58 pm »

I'm finding that if I connect the PC case to ground (using one of the ground wires in my 'star' ground arrangement, itself connected to a clean, totally isolated and ultra-low impedance earth) I get a phenomenal improvement in SQ.

Well, as is often the case (with me at least) I think I've been lured into a false sense of improvement when doing this... There's obviously a lot more going on with the USB connection of the NOS1 than us mere mortals are aware of.

I really wanted to get to the bottom of this and spent a few hours over the weekend trying a few things and listening to their effects.

It seems that my monitor has a major affect on the sound. It doesn't matter if it is switched on or not... just the fact that it is physically connected to the PC changes the sound. I think that the monitor cable is creating a ground loop of some sort. Now this may not be an issue with other monitors, but mine is an older Dell monitor with an IEC socket, and I think the ground is connected internally to the cable shield.

Anyway, the upshot is that the sound is much, much 'nicer' when I disconnect the monitor cable during playback. A PITA for sure, but definitely worth it.

Try it!

Mani.

Hi Mani,

In my case I canīt see differences when the monitor is connected (via VGA) or not. Neither with the keyboard and mouse connected to a hub with an USB active extension.

But these issues, together with the one about the power supply, leads me to think that although the improvement in the software (XXHighEnd) and in the NOS1 will never end there are other important parts to which attention should be paid in order to work with synergy (remember that audiophile word?) with XXHE and the NOS1.
Maybe now, that the NOS1 USB seems to have reached a very notable grade of perfection could be the time for Peter (sorry, we all know you work tirelessly) to take the task to investigate on this hardware, i.e. the power supply he was working on or how to get the less possible impact on the sound with the different connections: monitor, mouse and keyboard. Maybe the remote in his mind will be the solution...

Juan
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Processor i7 970: 3200MHz, 6+6 cores/ RAM Corsair DDR3, 24Gb, 1333MHz/ Mb Asus X58 Sabertooth/ OS and XXHE in same SSD (Crucial M4 128Gb) Sata II connected/ Music files: WD 2Tb in USB 3.0 external box/ Graphics: Radeon HD5000 series 512 Mbytes, passive/ Power supply: Seasonic SS-400FL2, passive/ PCIe: Silverstone USB 3.0 SST-EC04-P.

Configuration and Updates in HOW IīVE BUILT MY NEW PC...http://www.phasure.com/index.php?topic=1673.0

Windows 8 Pro 64bits/ XXHE 1.186-a and OS in SSD, XXHE and XXdata running from Ramdisk (A:) 3Gb/ Playback Drive: Ramdisk (B:) 5Gb/ KS:Phasure NOS1 Out 4.0/ #4 Engine/ Adaptive Mode/ Q1=6, Q3,Q4,Q5=1, xQ1=1/ Dev.Buffer: 4096/ ClockRes: 0.5ms/ Straight Contiguous/ SFS: 0.32 (max 120)/ not Invert/ Phase Alignment Off/ Playerprio: Low/ ThreadPrio: Real Time/ PCA Scheme:Core 3-5/ UnAttended/ All Services Off and Stop ALL Services/ No WallPaper/ No OSD/ No Running Time/ 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/ Double Octo Arc Prediction Upsampling/ PeakExtend: Off.

Music PC - USB 3.0 Silverstone SST-EC04-P (both sides isolated) > USB 2.0 Peterīs standard cable > PHASURE NOS1a (driver v1.0.3a, 2ms) > 2m. XLR/XLR 47uF interconnects> Genelec 1037B 3-Way Active speakers. Power cord in star with three wires, two for the speakers and one for the NOS1a.
PeterSt
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« Reply #33 on: December 28, 2011, 09:27:03 am »

All,

I tested a SOtM USB card in my system;

Measured it and saw no difference (and in order to influence SQ by such a device I really should have). Sounded OK to me.
Of course I already told that it shouldn't make a difference, but it is nice to confirm it (instead of some blahblah only).

There is a difference though, because I was not able to use the 2ms Streaming Buffer for the NOS1; I tried 8ms as the alternative and that worked trouble free.

Maybe this helps someone,
Peter


PS: Mani, obviously I went as far as installing a PCI card in my audio PC, which really isn't without hussle in my case. But since I did that anyway ... it is out now again, leaving space for that other PCI card. Well, you know ... yesyes
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** Denote the latest changes.

W7 - February 9, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @*500MHz*, 16GB, Windows 7 Enterprise 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = *6*/-/1/1/1 / Q1Factor = *1* / Dev.Buffer = 4096 / ClockRes = 15ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.40* (max 320.00) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - *Persist* (this is for conveniency and sub 1.186a)  / No WallPaper / No OSD / No Running Time / Minimize OS / XTweaks : *Use Settings* - *64, 1, 1, 0, 1* / Time Performance Index = Optimal / Time Stability = On / Double Octo Arc Prediction Upsampling / -> USB3 (*Silverstone *both* sides isolated*) -> 24/768 Phasure NOS1 async USB DAC, Driver v1.0.3 (*16ms*) -> Orelo MKII Active Open Baffle Horn Speakers.
**Removed Switching Supplies from everywhere**

W8 - March 1, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @0.43GHz, 16GB, Windows 8 Pro 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 6/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = *0.5ms* / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.32* (max 120) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - Not Persist / No WallPaper / No OSD / No Running Time / 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 = On / Double Octo Arc Prediction Upsampling / -> USB3 (Silverstone both sides isolated) -> 24/768 *modded* Phasure NOS1 async USB DAC, Driver v1.0.3 (2ms - this is not guaranteed for the NOS1) -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere

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jarek
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« Reply #34 on: January 28, 2012, 03:51:09 pm »

I have SOTM USB in my system and the best combination for the sound quality is when I use SOTM for my keyboard and WiFi, and plug my NOS1 to one of computers integrated USB ports. NOS1 is the exclusive device using integrated USB ports. I know you might consider this stupid, but NOS1 sounds the best to me when plugged to the mainboard.

Jarek
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Windows 2008 Server Std 64bit *SP2* / dual boot with Win 7 Professional 64-bit *SP1* on SATAII spinning disk, XX on Spinning Disk, music on SATAII, i5-660 (4 cores) / 16GB RAM / Engine#4 *Adaptive Mode* / Q1/2/3/4/5 = *30*/0/0/0/0 (Dev.Buffer = *4096*) / ClockRes = *0,5ms* / Straight Contiguous SFS = 120 /  *Minimize OS = Off* / *Double Octo* Arc Prediction Upsampling /-> 24/768 Phasure NOS1 async USB DAC -> ARC Ref 40 Preamp -> mainamps.
PeterSt
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« Reply #35 on: February 02, 2012, 06:41:35 pm »

Thanks for sharing Jarek. Doesn't sound stupid at all, because this is what I saw myself (without listening).

Regards,
Peter
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** Denote the latest changes.

W7 - February 9, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @*500MHz*, 16GB, Windows 7 Enterprise 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = *6*/-/1/1/1 / Q1Factor = *1* / Dev.Buffer = 4096 / ClockRes = 15ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.40* (max 320.00) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - *Persist* (this is for conveniency and sub 1.186a)  / No WallPaper / No OSD / No Running Time / Minimize OS / XTweaks : *Use Settings* - *64, 1, 1, 0, 1* / Time Performance Index = Optimal / Time Stability = On / Double Octo Arc Prediction Upsampling / -> USB3 (*Silverstone *both* sides isolated*) -> 24/768 Phasure NOS1 async USB DAC, Driver v1.0.3 (*16ms*) -> Orelo MKII Active Open Baffle Horn Speakers.
**Removed Switching Supplies from everywhere**

W8 - March 1, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @0.43GHz, 16GB, Windows 8 Pro 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 6/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = *0.5ms* / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.32* (max 120) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - Not Persist / No WallPaper / No OSD / No Running Time / 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 = On / Double Octo Arc Prediction Upsampling / -> USB3 (Silverstone both sides isolated) -> 24/768 *modded* Phasure NOS1 async USB DAC, Driver v1.0.3 (2ms - this is not guaranteed for the NOS1) -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere

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greywind11
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« Reply #36 on: June 23, 2012, 08:11:28 am »

Hi Jarek,

Just saw your post about the Sotm usb card and I have something to add. I tried this card as well and ended up with the same results, eventually sending it back to Jesus. Great guy he is by the way and I'd like to try his usb converter.

I ended up installing a 2-port usb3 card by Startech and it has solved all my problems. I listen a lot more now, without any hangups, FIFO errors and the sound is amazing. Now I need to upgrade my Zalman to i7.

Can't imagine the sound will get much better though.

/Lee
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XXhighend 9z6.1, KS mode eng#4 adaptive, 4096 buffer size, low/realtime, SFS 430, Q30,0,0,0,0; Zalman TNN-300; PQ5EM 16GB RAM, 2 cores; OCZ 120GB SSHD;  Sotm Sata and Fan power filters; Win7 64bit sp1-->Phasure NOS1 USB.
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