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Author Topic: Phasure NOS1 24/768 async USB DAC  (Read 45292 times)
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PeterSt
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« on: July 16, 2011, 08:53:04 am »

General

The Phasure NOS1 24/768 async USB D/A Converter again defines new standards. Not only the technical level is up to the extreme, but sonically it superceeds the original Phasure NOS1 by far. And that was already considered to be the best ...

Thinking about the explicit Sound Quality Control always incurred for by the XXHighEnd software, we are now greatly proud to anounce that all what could be done so indirectly in PC software before, can now be done directly in-DAC. A world's first once again !
Although at this moment the DAC operates with the best sonic settings we could find, the firmware -which directly controls the hardware- is upgradeable in a whimp. And, like with XXHighEnd, more versions of it could be readily available on your computer, you picking the best sounding one. Changing the firmware is nothing more than reconnecting the DAC to the USB cable ...

With the knowledge of XXHighEnd and SQ control, together with the development experience of the original NOS1 - at last it was achieved that the software influence has been eliminated. SQ Controls in XXHighEnd won't do a thing to the sonic performance of the new NOS1, as won't different software sound different anymore (no Digital Sound Processing assumed to begin with).
It is to be kept in mind though that the Phasure NOS1 async USB requires external filtering, so it is there where software still will matter. But, this is completely intentional (and is a form of DSP).

The NOS1 USB will work on any MAC just the same, but here too it is to be kept in mind that the external filtering is required for Redbook material. This is not the case for HiRes where all filtering just should be out of the way. On this matter the NOS1 does not contain any filtering of any kind, so its inherent impulse response (which is the mimimum of one sample long) will uniquely 100% show you what HiRes really brings.
An optional Direct DSD/DSF (no conversion to PCM) input is due shortly as a user installable add-on board.

Where the original NOS1 already was fameous for its accuracy, the NOS1 USB dives into a whole new world of that. You will be shocked about the detail coming from your regular favorites. Basses will be basses like never before (including the original NOS1) and even at breaking in it will be noticed that no woman voice is able to go wrong ever anymore. The high frequency output has increased to a virtual crazy level, with the notice that here some break-in is needed (approx. 14 days).
After that, distinguishing from live performers in your listening room will be the most tough. The sizes of instruments will show as never before. A piano sounds like a real piano. A sax can't go wrong. 60's recordings suddenly appear to be the best ever. The effortlessness of it all ...

Again assuming no preamp will be used (which is the explicit advice), a more than average good playback chain is assumed. This is related to the sheer speed of transients, and the requirement of the chain to be able to follow that. Without this, the sound may become somewhat aggressive.
The NOS1 USB is targeted on the highest degree of audiophile music reproduction through loudspeakers, so most probably it will be allright - assuming all is aranged for to the best of knowledge anyway. Still, there is the usual 90 day money back guarantee just in case it isn't working out (Edit : see Phasure NOS1 Refund Model).
However, for those experiencing problems in this realm, it is good to know that the beforementioned add-on board will contain an A/D section and with the help of the totally unique XXHighEnd analysis software (sadly not available for Mac) you will be able to create groundpaths for your chain with the least noise. See Measuring XXHighEnd from over two years back to get an idea of what this software can do, which sure is not only about eliminating noise. If you think cables matter, this will show you the truth without any doubts left.

Availability : Today (first unit ships July 20).
This doesn't mean short delivery times though;
We have very limited stock only, that coming from sample productions of the USB boards. This means a larger batch of that has to be produced first in order to be able to start assembling a sufficient amount of DAC units. It may take 4 weeks or more to obtain some free stock, but we may keep running behind forever.
It is to be taken that the current stock already has been consumed by orders from the last few weeks because these orders were put on hold - knowing about this "upgrade" being due. These orders have obtained priority obviously.

Existing NOS1 users can fully upgrade to the NOS1 USB, but it will require to send over the DAC. In the mean time they might like to change the colour which is very well possible, but which will be relatively expensive, already because the DAC has to be fully de- and reassembled for that.
After upgrading, the NOS1 USB will be as extensible with the options mentioned below in the Features list.







General Features Phasure NOS1 24/768 async USB :

(x) denotes a standard feature, contained in the price shown at the bottom


  • Asynchronous USB with maximum input of 32 bit 768KHz. Output : 24/768 max. All further sample rates supported. (x)

  • Automatic track to track selection of bit depth and sample rate. (x)
    Needs XXHighEnd at this time. Settable (Control Panel) otherwise.

  • Fully upgradeable extremely robust Driver and Firmware for ASIO, WASAPI and Kernel Streaming. (x)
    Notice that XXHighEnd does *not* support ASIO at this time, but other playback software will.
    See below *) notations for planned near future software upgrades. The more * the lower the priority of development.

  • Direct instant volume control via the Driver using the known XXHighEnd algorithms. *) (x)
    Does *not* need XXHighEnd.

  • Meant for Windows PC and Apple Mac (32 and 64 bit Operaring Systems) (Mac at max 32/384 input at this time).
    Playback software is allowed to (and should) provide the filtering means (the DAC carries no destructive means of any sort). HiRes material is (and should be) passed 100% untouched. This means a truly "bit perfect" complete chain.
    At this time it is unknown what additional time it needs to develop the additional software extensions for the Mac.
    Edit August 22-2011 : By now it is clear that at least Audirvana does a fine job on the filtering.

  • Configuration hardware options/extensions available.
    See below +) notations for planned near future hardware upgrades. The more + the lower the priority of development.
    Notice that these are hardware extensions, and generally a not available extension at the moment of ordering/delivering will allow upgrading yourself by minimal soldering (if at all).

  • SPDIF Input.

  • SPDIF Output / Throughput.

  • i2s Input. +++)

  • SPDIF Input direct or SRC controlled. ***)

  • i2s Output. +++)

  • 2ch USB/SPDIF converter only. +)
    This needs a special case.
    SPDIF output will be ultra low jitter, similar to the original Phasure NOS1.
    Can be combined with i2s Output (see above).

  • Digital loopback for 2 channels (max 32/384). (x)
    Use to your imagination.

  • 8 channel 24/384 operation. +++) ****)
    The interface is ready for this, the output stages of the D/A part are not at this time.
    The software development comprises in-driver XOver functions.
    4, 6 or 8 channel operation is user selectable.

  • Immune to playback software on the SQ department. (x)
    At last ...


The following is about hardware add-ons coming on a separate user-installable circuit board, which will be available in August 2011 :

  • DSD-128 (or -64) Input. **)
    Notice that this is about Direct DSD (not converted to PCM) and that at this moment XXHighEnd can not play Direct DSD yet. Other players can though.

  • 24/192 2ch A/D conversion (recording).

  • Full system Noise Analysis.  ***)
    This includes (later) upgradeable Driver software.
    Needs XXHighEnd and will also allow for the special XXHighEnd Analysis software (measure *any* difference in cables, software, etc. etc.).

  • Additional 2ch Oversampling (!) 24/192 D/A converter.




Specifications of the PCM D/A section in short :

All measurements at the end of a 2m cheap interlink, done with a dScopeIII digital analyser :

  • Frequency response 1 Hz to 384000 KHz (768KHz sample rate). Flat within 0.19dBr in the audio band (DC not sustainable).

  • Input of 16 or 32 bits for all Sample Rates (24 bit input is converted to 32 bits).

  • Input Sample Rates (Hz) : 22050*, 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600*, 768000* all auto-select without glitches*.
    * Under control of XXHighEnd only.

  • Output Sample Rates always equal the Input Sample Rates, but notice that in software (PC, XXHighEnd) each native “file” Input Rate can be upsampled to each accepted higher Output Rate (like 96000 to 384000 or 44100 to 176400 etc.) and next is output to the DAC. Output bit depth is 24 - or 16 bits when Input bit depth is 16 bits.

  • 100% Filterless Non Oversampling design, using 8 x PCM1704U-K Burr Brown (Texas Instruments) multibit 24 bit D/A converter chips. Filtering for Redbook material to be applied in software (officially provided by XXHighEnd through Arc Prediction which supports all modes), or not using filtering at all (like for HiRes), at own choice.

  • Output level for Single Ended Mode (RCA) is 1.5VRMS (-3dBFS relative to normal Full Scale). Output level for Differential Mode (XLR) is 2.7VRMS (+3dBFS relative to normal Full Scale).

  • Output Impedance is 33 Ohm. It is the explicit advise to use the NOS1 without pre-amp and without analogue volume control for optimum results (long interlinks can be driven).

  • The Clock section consists of separate 44100 Hz and 48000 Hz base oscillators. The provided oscillators carry an overall jitter of better than 0.5ps and phase noise of better than 120dBc/Hz at 100Hz and better than 108dBc/Hz at 50Hz.

  • The net jitter should equal the fed jitter (of 0.5ps; there's nothing in the path from the oscillators to the D/A chips).

  • All terminals are official Neutrik.

  • Requirements PC : USB 2.0 interface.
    MAC : USB 2.0 interface.

  • Allowed USB cable length is 6 meters / 20' 7 meters / 23'.

  • USB is powered by an internal dedicated linear power supply.

  • Output terminals are provided for Single Ended (SE, RCA) as well as Differential (Balanced, XLR) by standard. No switches are in the signal path and no transformers are involved.

  • S/N ratio in-(audio)band is at –132dBFS at full scale (-0dBFS) differential (XLR) output.
    Out of band (from off 31000Hz and up to 96000Hz which is the measureable limit) this is better than –144dB, and at the limit of the analyser operating at 24 bit and 192KHz.
    For SE (RCA) output at –6dbFS (the maximum for the 1.5VRMS output) the noise is at –140dBFS or 134dB down. Here, the noise from off 31000Hz and up is at –144dBFS or 138dB down.

  • Mains related products for SE measure 17uVRMS at –121dBFS (measured at 50Hz mains). Notice this will be because of the pickup of noise of poor interlinks. Better interlinks will show better than 7 uVRMS at –128dBFS.
    Mains related products for Differential measure 2.2uVRMS at –139dBFS (measured with 50Hz mains).

  • SE (RCA) output measures in(-audio)band Unweighed 0.0018% THD+N at 16 or 24 bit input and an 1KHz test signal with a sample rate of 44100Hz and Arc Prediction filtered into 176400Hz.
    The THD+N from Differential (XLR) is beter than 0.0015% which is under the typicle specs of the D/A chips.
    Notice : This is measured at 24/192KHz sample rate because of analyser limits. But, the NOS1 USB is made for 24/768000(705600) input, which implies a theoretical factor of 4 better. Taking the Non Oversampling principle into account, it will be fair to calculate the 1KHz testsignal's THD to 0.00045% for RCA and to 0.000375% for XLR. This also counts for THD+N because the extrapolated result will still be above the noise floor.
    Further non-extrapolated results from 24/192000 measurement :
    The same 1KHz test signal measured unweighed over the total analyser’s useable range (0 – 96000Hz) shows a THD+N of better than 0.0035% (XLR).
    A-Weighed this is better than 0.0013% and C-Weighed better than 0.0009%.
    In-band A-Weighed is better than 0.0012%, C-Weighed better than 0.0009% again.
    All measurements have been done at the end of 2m interlinks, the input impedance of the analyser set to 100K. This gives the real honest figures going directly into your power amplifier.

  • In addition to the above, all in-band harmonics stay under –110dB, and out of band residuals at an equal distance to the sample rate of the test tone can be seen at –95dB (like for a 44100 base sample rate and 1000Hz test tone, at 43100 and 45100). When extrapolated from the 24/192000 measurements to the 24/706500 real life playback practice, the figures will be -122dB and -107dB respectively.

  • Channel separation RCA : Better than 125dB.
    Channel Separation XLR : Better than 130dB.

  • Suitable for 110-130V or 220-240V.
    Watch out : Units with a Serial Number of 10001 u/i 10200 will be internally wired for 110-130V or 220-240V on your indication at ordering. It will need the change of this wireing to make the unit suitable for that other mains. Please take good notice of this when taking (or selling) the unit to country with this other mains;
    The re-wireing will take 5 minutes to change, but you may not be able to do it yourself. Units with Serial Numbers of 10201 and up will contain a user-switchable power inlet. And careful : The currently used power inlet looks to be switchable as well, but it really is not !! It will only indicate the target mains on the outside, and while this by itself is user-switchable this should not be done in any occasion, without changing the inernal wireing accordingly !

  • Double secured with 500mA (1000 for 110V) fuses (non “audiophile” for hot and cold); The second fuse is not a spare, but actually used.
    No mains filter of any kind is applied.

  • Full color touch display which can be switched off. (Touch) Functionalities vary per XXHighEnd version.

  • Dimensions (L x W x H): 43.5 x 43.5 x 8 cm = ~ 17.4 x 17.4 x 3.2 "
    Weight ~10.4 kg = ~22.9 lbs.

  • No audio feet provided !




Pricing

Price of the new NOS1 USB in standard blue colour powdercoat (see below picture) 2ch RCA+XLR Out : 3320 euro ex vat and shipping.
Price of Upgrade from the original NOS1 to NOS1 USB : 335 euro ex vat and shipping.

Price of any car paint (two component) colour (provide a colour code please) : 160 euro.
Price of powdercoat black (picture at the top) : depending on the amount which can be done at the same time, between 125-175 euro. 70 euro. Edit September 23 2011 : We have let done a batch of 25 for the time being allowing this price now. We name it Saturn Black and it is a soft-feeling beautiful finish with small spikes of metallic.

Notice that the first batch of NOS1 DACs do not contain the DC Offset Control and real time Meters; it is adviced to have your NOS1 upgraded to that for 140 euro, when you upgrade anyway.

Price of further extensions on request (because of the efficiency in the various combinations).
Email requests or questions may be sent to sales a@t phasure.com; please denote "NOS1 USB" as part of the title.



* Phasure NOS1 Blue.jpg (198.1 KB, 800x533 - viewed 13802 times.)
« Last Edit: October 06, 2011, 06:57:11 pm by PeterSt » Logged

** 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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praphan
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« Reply #1 on: July 16, 2011, 12:37:52 pm »

Hi Peter,

This is the upgrade that you ask me to wait for !

So I have to wait until next month.

Regards!
Praphan
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PC: Asus X58 chipset M/B; Seasonic 850W PSU; i7 970 12 threads (HT=on); ATI HD 5770; Zalman Reserator water cooling, 24GB RAM, Plextor PX230A drive ; W7 Pro 64bit plain SP1 (no further update) and XXHE on Velociraptor; music on Sata 3 2 TB HDD; WD5003ABYX sits on Thermaltake USB3 dock as playback drive; Star Tech PCIe USB3 card

XX 0.9z-8-3a : KS Engine 4 "Adaptive"; DB = 4096; APx16; Q1/2/3/4/5 = 14x1/0/0/0/0; No Appointment/low/real time; CR = 0.5 ms; XTweaks Ultimate; SC; SFS= 120/120 ; allow format change; unattended ; min OS and stop "all" services; normalized volume usually played at -15db ;  peak extension on ; PA off

Signal chain: 24/786 NOS1 USB; 16 ms buffer on driver 1.0.2 => Valhalla XLR IC = > McIntosh 2301 tube monoblocks => Purist Dominus spk cable => B&W 802 D
PeterSt
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« Reply #2 on: July 16, 2011, 01:27:20 pm »

No Praphan, of course you don't have to wait. And yes, this is the upgrade.

As a matter of fact, I didn't get around to notify anyone yet, except for one ...
Apologizes for that. Anyway, nobody who already ordered will have to wait. This includes your special case. I hope to send you (and everybody) an email later today.

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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« Reply #3 on: July 16, 2011, 02:27:26 pm »

Hi Peter!

That is great!  Cannot wait to upgrade mine so I can solve my Juli@ card compatability issue.

Once upgraded, I will put it on the test bench to check the compatability with P67, X58 and G880 chipset mobo made by Gigabyte. Trust that USB interface will solve all the problem.

Thanks
Praphan 
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PC: Asus X58 chipset M/B; Seasonic 850W PSU; i7 970 12 threads (HT=on); ATI HD 5770; Zalman Reserator water cooling, 24GB RAM, Plextor PX230A drive ; W7 Pro 64bit plain SP1 (no further update) and XXHE on Velociraptor; music on Sata 3 2 TB HDD; WD5003ABYX sits on Thermaltake USB3 dock as playback drive; Star Tech PCIe USB3 card

XX 0.9z-8-3a : KS Engine 4 "Adaptive"; DB = 4096; APx16; Q1/2/3/4/5 = 14x1/0/0/0/0; No Appointment/low/real time; CR = 0.5 ms; XTweaks Ultimate; SC; SFS= 120/120 ; allow format change; unattended ; min OS and stop "all" services; normalized volume usually played at -15db ;  peak extension on ; PA off

Signal chain: 24/786 NOS1 USB; 16 ms buffer on driver 1.0.2 => Valhalla XLR IC = > McIntosh 2301 tube monoblocks => Purist Dominus spk cable => B&W 802 D
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« Reply #4 on: July 16, 2011, 04:59:21 pm »

I think is time to star saving for this!!!!!!! Thanks
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Main Rig: MSI 620 Laptop, 4 GB Ram, Drobo NAS 8 TB, M2Tech Evo Battery Powered, Audio GD DAC 9 Mk3 PDM 100 8 PCM1704, Audio GD C39 MK3 Peamp, Margules Audio U280SC Tube Amp, Monitor Audio GS20 Speakers, Monitor Audio RSW-12 Subwoofer
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« Reply #5 on: July 16, 2011, 05:26:04 pm »

Hi Peter, I'm just off to catch a plane, but I simply HAD to comment on this first. Please reserve two USB upgrades for my two beautiful 'off-white' NOS1s. I'm back in the country on the 23rd, and my NOS1s will be on their way to you on the 25th.

This is very, very exciting stuff.

I have a quick question for you though: Where on Earth do you find the time to do all this stuff? Whatever 'efficiency pills' you take, I want some!

Mani.
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PC 'Le Monster': CaseLabs W8 / x79 mobo / i7 3960X / 16GB RAM / ***W8Pro(x64)***, XX and all music on a single 2TB HDD (100GB partition for OS)
XXHighEnd: ***1.186*** / Engine#4 Adaptive / DB=4096 / Q1=6 /  xQ1=1 / Q3,4,5=1 / SFS=0.8 (120 max) / Straight Contiguous / Clock Resolution = 0.5ms / Scheme 3-5 (low/realtime) / 16x AP / Peak Extend = OFF / Unattended / Minimize OS / Phase Alignment = OFF / XTweaks = 43, 100, 1, 1, 1
System: Phasure NOS1 -> (temporarily, until BD-Design Orelo MkII speakers arrive) BD-Design gainclone mono amps & Celestion SL600 speakers
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« Reply #6 on: July 16, 2011, 06:42:57 pm »

Hey Peter,

Time for me to put my hand in my pocket again so please add me to the list. And I agree with Mani do you ever sleep? and if you do what do you dream about NOS1 upgrades?.

Meanwhile I am busy selling more of my hifi to justify paying for of this (I have to do a cost justification for my wife).

I just love the idea of running XX in firmware - brilliant and unique. Eat your hearts out all you other so called "hi end" manufacturers.

All the best

Paul

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W8 - March 22, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @0.43GHz, 16GB, Windows 8 Pro 64bit on SATAIII spinning disk, Page File *OFF*, no other HDD's, DVD rewriter disconnnected, 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 (Dexa clocks at both ends) -> 24/768  Modified Phasure NOS1 async USB DAC, Driver v1.0.3 -> Bridged Gainclone Amp -> IPL S5 Speakers (with Bybees). No fans in PC. No SM supplies. 3kw Balanced Supply Transformer *extreme* star earth.
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« Reply #7 on: July 16, 2011, 08:54:10 pm »

Hi Paul, I'll be in touch in a week or so to arrange to come down to yours... unless you'd rather delay until your NOS1 upgrade is done.

Cheers, Mani
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PC 'Le Monster': CaseLabs W8 / x79 mobo / i7 3960X / 16GB RAM / ***W8Pro(x64)***, XX and all music on a single 2TB HDD (100GB partition for OS)
XXHighEnd: ***1.186*** / Engine#4 Adaptive / DB=4096 / Q1=6 /  xQ1=1 / Q3,4,5=1 / SFS=0.8 (120 max) / Straight Contiguous / Clock Resolution = 0.5ms / Scheme 3-5 (low/realtime) / 16x AP / Peak Extend = OFF / Unattended / Minimize OS / Phase Alignment = OFF / XTweaks = 43, 100, 1, 1, 1
System: Phasure NOS1 -> (temporarily, until BD-Design Orelo MkII speakers arrive) BD-Design gainclone mono amps & Celestion SL600 speakers
Leo
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« Reply #8 on: July 17, 2011, 10:08:15 am »

Hi Peter,

when, I mean how soon, can I come to your place to upgrade my old NOS1???

regards,

Leo
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Dedicated silent audio pc HFX classic, Windows 8 pro 64bit  / Intel 3930 CPU 6 cores 12 threads,  ASRock x79 Extreme4-M/ SeaSonic Platinum 400w ATX PSU / 16Gb RAM , music on (SATAIII), MinOS/ Engine#4 Special Mode / Q1/2/3/4/5 = *6*/0/1/1/1 Qf=1 (Dev.Buffer = 4096) / not Invert / Playerprio = Low / ThreadPrio = Real Time / *Scheme = 1-2* @ UnAttended  /Services Off + No Running Time / Octo Arc Prediction Upsampling / *SFS=0,4 max= 120*  XT Tweaks balanced load 43, nervous=100, cool when idle 1, Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = On / Double Octo Arc Prediction Upsampling / -> USB with Dexa clock -> 24/768 Phasure NOS1 async USB DAC, Driver v1.0.3 (2ms) ->  direct to AMP: Gainclone mid high, Hypex DPS400 low, horn system (tractrix for mid/high, BD for bass with Oris200)
Suteetat
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« Reply #9 on: July 17, 2011, 12:11:24 pm »

Peter, I am looking forward to hear the new Phasure when Praphan has it installed in his system.
I am curious about support for DSD. Is that means that perhaps in the future XXHighend may also
support DSD streaming? Also does Phasure support DSD natively or does it convert DSD to PCM first?

I should be getting the new USB module for my PD MPS-5 which will support 24/354 and DSD2 streaming
in the next month or so. It would be interesting to compare to Phasure. However, I am running out
of input on my LAMM pre with 2 phono pre and one DAC already unhappy.

PS is the power cord attachment still in the same location as the original Phasure?
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« Reply #10 on: July 18, 2011, 12:42:25 am »

Peter,

All is out now, and way, way more mouth watering than expected !

There was me making evolutionary changes to the Juli@ interface and you were up to your usual revolutionary approach again  Wink

Please put me down for the upgrade as soon as you have capacity.

Best regards,

Nick.
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Windows 8 Ultimate 64bit  / Intel 3930 CPU 6 cores 12 threads, standard CPU speed / ASRock x79 Extreme4-M/ SeaSonic Platinum 400w ATX PSU / 16Gb RAM / fanless / SATAII  HDD / Asus GeForce 210  VGA card / PCIe USB 3 card with DIY 24mhz clock upgrade => XX V09-z9/ adaptive mode / XX buffer 4096 / NOS USB driver v 1.02 buffer 16ms / Q1,2,3,4,5 = 30,0,0,0,3 / xQ1 =2 unattended / SFS 60Mb / memory straight continuous / system clock 1ms / Threadprio RealTime / Playerprio Low / CPU scheme 3 / 16x Arc Prediction / Peak Extend off / Phase alignment on + / Phase off  / XTweaks : Balanced Load 53 / Nervous Rate 100 / Cool when Idle 1 / Provide Stable Power 1 / Utilize Cores always 1 / Time Performance Index = Optimal / Time Stability  On => modified NOS1 USB DAC => no pre-amp => Bi-amp Bridged Gainclones => Avantguard Duos. System powered from two 3kva balanced mains isolation transformers.
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« Reply #11 on: July 18, 2011, 07:59:29 am »

Mani, thank you. We will continue this via email, ok ?

Paul, consider that colour change. You can always tell your wife that this is *the* opportunity to change the colour. Let her pick it, but be careful. Happy

Leo, it is almost not feaseable to wait for it. Theoretically doable but the planning is a bit difficult at this moment. In either case it will take 4 weeks or more to even start thinking about it. Here too, let's continue via email.

Suteetat, as you will have heard we're fighting some stupid double customs duties. Really crazy that there doesn't seem to be a procedure for it. But undoubtedly we will manage.
It is the intention that DSD is going to work without conversion to PCM, but honestly I am working on that one right now and the design is not complete yet.
Power cord is still the same, but the end of the current stock of cases comes in sight. All is solved by a 90 degree angled cord of course, which anywone can or will do, once you're into your own cords anyway. But notice that this too is "in-DAC" impeded, and where before with XLR a slight rise was to be seen under 100 Hz, today this has completely vanished. IOW, where people might think this is because of 50 (or 60) Hz mains influences, it really is not. Or, not from there at the outside ...

Nick, consider your efforts to be beneficial to all, hence the new NOS1. The latter above is just part of it. I think we have been driving eachother to the sort of ultimate. At least I have been tempted to "see" the least noise possible, which is -as often- only the reference of what's achieveable. Next it "only takes" to push yourself to achieve that reference in whatever other situation. This is what happened, and it is exactly this why USB started to work in the first place. Without this ? no way it would have been any good.
For others ... what this came down to in the end to was a design with the least different number of voltages, so no (noise incurring) regulations anywhere had to be applied. This succeeded, although 2 very low current and harmless 1.2 and 2 voltages are still in there. And for your fun Nick : at the very very end (only last Friday) at assembling a first final DAC in this setup, we ran into a small problem I didn't (and actually couldn't) notice myself. A 12V relais which was fed by the old Juli@ 12V linear supply which I still had in my own test DAC. No 12V supply is in the NOS1 USB anymore, and with the solder on the iron we "dicovered" it. A larger problem you can imagine, because no low voltage relais exist for the thicker supply wires it controls (well, not that I could find in fast fashion). I really saw all collapsing, also knowing that no real space is available for another dedicated PSU. But after sitting back for a day I found a solution ...
Thank you Nick, on behalf of all.

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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« Reply #12 on: July 18, 2011, 09:32:22 am »

Mani, thank you. We will continue this via email, ok ?
I'll send you an email...

Nick, consider your efforts to be beneficial to all, hence the new NOS1.
Nick, thanks for 'pushing' Peter into this.

Mani.
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PC 'Le Monster': CaseLabs W8 / x79 mobo / i7 3960X / 16GB RAM / ***W8Pro(x64)***, XX and all music on a single 2TB HDD (100GB partition for OS)
XXHighEnd: ***1.186*** / Engine#4 Adaptive / DB=4096 / Q1=6 /  xQ1=1 / Q3,4,5=1 / SFS=0.8 (120 max) / Straight Contiguous / Clock Resolution = 0.5ms / Scheme 3-5 (low/realtime) / 16x AP / Peak Extend = OFF / Unattended / Minimize OS / Phase Alignment = OFF / XTweaks = 43, 100, 1, 1, 1
System: Phasure NOS1 -> (temporarily, until BD-Design Orelo MkII speakers arrive) BD-Design gainclone mono amps & Celestion SL600 speakers
KnB
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« Reply #13 on: July 18, 2011, 10:59:22 am »

nice Happy
Glad I had the dc offset problem some weeks ago  yahoo
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i7 950 quad/12MB ram - NOS1 async usb - DIY pre amp - DIY 300b amps - DC10Audio L'instrument
christoffe01
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« Reply #14 on: July 18, 2011, 11:47:47 am »

[quote author]

The Phasure NOS1 24/768 async USB D/A Converter again defines new standards. Not only the technical level is up to the extreme, but sonically it superceeds the original Phasure NOS1 by far.
-Unquote-

Hi Peter,

now I'm really confused. I remember the posts about your reservations against USB.
-----------------------------------------
No USB 3.0 interface?
-----------------------------------------
"but sonically it superceeds the original Phasure NOS1 by far"  -  How far? Do I recognize the files (music) or do I hear them with new details?
-----------------------------------------

The best time for an upgrade seems to be in September/October 2011?

best

Joachim
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September 02., 2011 (due 0.9z-6)
Plain Windows 7 Prof 64bit on SATAII spinning disk, / Engine#4 *Adaptive Mode* / Q1/2/3/4/5 = *6*/0/0/0/0 (Dev.Buffer = *512*)/ClockRes = *10ms*/Mixed/SFS = 200/not Invert / Playerprio = Low / ThreadPrio = Real Time / Scheme = 3 @ UnAttended (Just Start) /All Services Off + No Running Time / / 4x Arc Prediction Upsampling /-> WEISS Minerva -> main amp
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