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Author Topic: NOS1 vs Empirical Audio Off Ramp/Overdrive DAC combo  (Read 6789 times)
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arvind
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« on: January 14, 2011, 01:34:55 pm »

After completing one week with NOS1, I wanted to share my experience vis a vis the Empirical Audio combo. The NOS 1 delivers what Peter had promised, scintilating highs, tight clean bass but the mids are a bit thin & lean, especially around the vocal range. Maybe it still requires to break in.

More update after a week or so.

Peter congratulations in designing an outstanding product.

Arvind
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W10-14393.0 RAM OS / Mach III LPS 14/28/XXHE 2.10c/Engine#4/Adaptive Mode/16x /Custom Filter/Q1= 30/1/1/1/xQ1=5/Device Buffer:4096/Invert Phase=On/Minimise OS/PE=off/Unattended/Stop All Services/SFS=0.69/140.19(max)/ClockRes= 15ms/Straight Contiguous/Music on NAS/Lush^2 USB cable A:B-W-Y-R; B: B-W-R/Phasure NOS 1a/75b/G3 USB DAC. Blaxius^2 A: B-R; B: B-R. Orelo MK II active speakers. Driver version 1.04/Driver Buffer 16ms. OSD text = Off
PeterSt
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« Reply #1 on: January 14, 2011, 04:15:27 pm »

Thank you Arvind. Very nice to hear. Keep in mind the last two weeks of the first month; those are the most important for breaking in.

On little tip maybe, and which possibly didn't slip into your mind yet :

If you still have the same speakers as before ... you can time align the drivers. Now think that maybe this is necessary again. At a certain stage I experienced that "problem" myself. So, imagine that the output waves are more "tight" (read thin - less "wobbling") and that time alignment becomes more important (critical) compared to before.

You will know best yourself whether this ever *can* matter, but from theory I think it can.

Regards,
Peter
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For the Stealth III LPS PC :
W10-14393.0 - Oct 31, 2018 (2.10)
XXHighEnd Mach III Stealth LPS PC -> Xeon Scalable 14/28 core with Hyperthreading On (set to 10/20 cores) @~660MHz, 48GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 30/-/1/1/1/ Q1Factor = 10 / Dev.Buffer = 4096 / ClockRes = 15ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 140.19  (max 140.19) / 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) / Stop Desktop, Remaining, WASAPI and W10 services / Use Remote Desktop / Keep LAN - Not Persist / WallPaper On / OSD Off (!) / Running Time Off / Minimize OS / XTweaks : Balanced Load = 35 / Nervous Rate = 10 / Cool when Idle = n.a / Provide Stable Power = 0 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = Stable / *Arc Prediction Filtering (16x)* / Always Clear Proxy before Playback = On -> USB3 from MoBo -> Lush^2*A:B-W-Y-R, B:B-W-R* USB 1m00 -> Phisolator 24/768 Phasure NOS1a/G3 75B (BNC Out) async USB DAC, Driver v1.0.4b (16ms) -> B'ASS Current Amplifier -> *Blaxius^2 A:B-R, B:B-R* 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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arvind
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« Reply #2 on: February 15, 2011, 09:15:18 am »

Hi Guys,

Finally completed the "so called" break in period of 30 days & for whatever it is worth here are my comments.

Firstly I would not go back to the Empirical Audio Combo; that indicates something, doesnt it???? Having said that, the main difference between the two is the sound transparency. Listening to Empirical Audio is like having the sound filtered through a fine curtain.

However the difference is not like night & day on a scale of 10, if NOS 1 is 10, then the Empirical would be a 8.5.

Great job Peter, this NOS is not coming back to you, unless you have a big upgrade coming up.

Arvind
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W10-14393.0 RAM OS / Mach III LPS 14/28/XXHE 2.10c/Engine#4/Adaptive Mode/16x /Custom Filter/Q1= 30/1/1/1/xQ1=5/Device Buffer:4096/Invert Phase=On/Minimise OS/PE=off/Unattended/Stop All Services/SFS=0.69/140.19(max)/ClockRes= 15ms/Straight Contiguous/Music on NAS/Lush^2 USB cable A:B-W-Y-R; B: B-W-R/Phasure NOS 1a/75b/G3 USB DAC. Blaxius^2 A: B-R; B: B-R. Orelo MK II active speakers. Driver version 1.04/Driver Buffer 16ms. OSD text = Off
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