Another Synchro-Mesh jitter breakthrough

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audioengr

Another Synchro-Mesh jitter breakthrough
« on: 4 May 2018, 11:10 pm »
This mod to the SM involves replacing 3 chips.  Reduces jitter from ~22psec to ~7psec.

Comparing the original version to this new version is clearly audible.  Much more 3-D and lifelike.  It's clear that reducing jitter to extremely low levels is necessary.

Measurements were done with Sonos driving the SM using a Standard BNC cable and using a Standard BNC cable from SM to the Scope.  Powered by the supplied 9V Wall-Wart.

Listening tests were done using  Sonos to SM using a $20 BNC cable from Markertek and a Reference BNC cable from SM to the Overdrive SX DAC.  Since this sounds so good with the cheap input cable, this mod may have made it less sensitive to the input cable used.  More testing will tell.

Jitter distribution:



Notice that the two peaks have changed to one peak.  This indicates that it is NOT the difference in rise and fall time or pull-up driver strength versus pull-down strength as I previously suspected.  I believe the ever so slight asymmetry is probably due to this.

Jitter spectrum:



Not quite as good as using the Dynamo supply, but very good anyway.

The mod can be ordered for $100 plus shipping and PayPal.  Both mods are $200 plus shipping and PayPal.

Since these mods are starting to be extensive, I plan to raise the price of a new Synchro-Mesh a bit.

Steve N.

rechsm

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #1 on: 6 May 2018, 03:20 am »
Hi Steve. Nice going with this news!

I have a question that I've been reluctant to ask. I hope you'll forgive me if it's rude.

Many DAC vendors talk about how their DACs do their own reclocking of the incoming digital audio signal to reduce jitter. I am thinking particularly of the PS Audio DirectStream and Schiit's Yggdrasil, which are the two that I happen to own.

I asked on the PS Audio forums about the relevance of reclockers to the DirectStream DAC, and the only replies I got were... unhelpful:
https://forum.psaudio.com/t/reclocking-sonos-for-directstream-dac/5843

So I thought I'd ask here: What kind of benefit could I expect to get from adding Synchro Mesh to the PS Audio DirectStream and/or the Schiit Yggy?

With your generous return policy I suppose I could just try it and see. But I thought I'd ask you first. Thanks in advance.

--Matthew

audioengr

Re: Another Synchro-Mesh jitter breakthrough
« Reply #2 on: 6 May 2018, 05:26 pm »
Hi Steve. Nice going with this news!

I have a question that I've been reluctant to ask. I hope you'll forgive me if it's rude.

Many DAC vendors talk about how their DACs do their own reclocking of the incoming digital audio signal to reduce jitter. I am thinking particularly of the PS Audio DirectStream and Schiit's Yggdrasil, which are the two that I happen to own.

I asked on the PS Audio forums about the relevance of reclockers to the DirectStream DAC, and the only replies I got were... unhelpful:
https://forum.psaudio.com/t/reclocking-sonos-for-directstream-dac/5843

So I thought I'd ask here: What kind of benefit could I expect to get from adding Synchro Mesh to the PS Audio DirectStream and/or the Schiit Yggy?

With your generous return policy I suppose I could just try it and see. But I thought I'd ask you first. Thanks in advance.

--Matthew

In general, the Synchro-Mesh will improve the SQ of DACs that reclock again internally, but there are exceptions, notably the latest Benchmark DAC. The only way to tell is to try it.

Steve N.

rechsm

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #3 on: 6 May 2018, 07:01 pm »
Quote
The only way to tell is to try it.

OK, then try it I shall.

Do I want the OTL coax output option for us with the PS Audio DSD & Schiit Yggy?

--Matthew

audioengr

Re: Another Synchro-Mesh jitter breakthrough
« Reply #4 on: 6 May 2018, 08:48 pm »
OK, then try it I shall.

Do I want the OTL coax output option for us with the PS Audio DSD & Schiit Yggy?

--Matthew

I recommend the OTL option with all DACs now.  Lower jitter.

Steve N.

rechsm

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #5 on: 6 May 2018, 10:02 pm »
Last question...probably. Are you including the mods in orders received as of today or...

I have my finger on the button here :)

--Matthew

audioengr

Re: Another Synchro-Mesh jitter breakthrough
« Reply #6 on: 7 May 2018, 12:18 am »
Last question...probably. Are you including the mods in orders received as of today or...

I have my finger on the button here :)

--Matthew

Both mods are going into new orders.  Price will increase soon though.

Steve N.

rechsm

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #7 on: 7 May 2018, 01:59 am »
Cool, thanks. Order placed. ✔︎

paul79

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #8 on: 19 May 2018, 07:50 pm »
Got this mod done, and it is no joke either. What Steve is extracting out of this affordable box is pretty amazing. Highly recommend this one for sure. Basically, image focus becomes even more spooky real and tight. A very nice upgrade for sure.

aniwolfe

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #9 on: 4 Jun 2018, 02:53 pm »
 :thumb:



« Last Edit: 12 Aug 2018, 07:07 pm by aniwolfe »

rechsm

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #10 on: 13 Jun 2018, 03:49 am »
I ordered this along with the rest of the Synchro-mesh and Dynamo kit to go with my Sonos and PS Audio Direct Stream DAC.

In brief, I highly recommend it. The difference, even with the reclocking that my DAC is already doing, is subtle but noticable. The nice thing about the Sonos is that the Toslink and Coax outputs are both always on, so I can run them both, one straight to the DAC and one through the SM, and flip instantly between them using the DAC remote control. This makes evaluating the SQ real easy.

I could pick out the difference on day 1 but it was probably after 30 or 40 hours of playback that I was really able to pick out the difference. Now I'm hearing a spooky level of detail in songs that I'm familiar with, particularly in echos, cymbals, sustains, decay, layered effects, things like this.

With the audition terms it's a no brainer, and you already know that Steve is a prince to deal with. So, I suggest you go for it.

--Matthew

Djwalter2000

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #11 on: 13 Sep 2018, 04:24 am »
Matthew, I have the same setup (Sonos feeding a Directstream DAC) except that I'm currently using a Wyred4Sound Remedy as the jitter reduction device. Have you ever tried a Remedy and could comment on the differences in SQ?

As the SM is still being updated and improved, I'm strongly considering moving to the SM. Given the most recent updates discussed in this thread, I'm also interested whatever info the group can provide on the technical differences between these two reclockers.

Thanks!

rechsm

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #12 on: 14 Sep 2018, 03:02 am »
I didn't try the Remedy, I can't comment on that. My understanding is that the DSD is already pretty advanced on de-jittering your source, so I wasn't looking for a night-and-day difference. Steve told me he believes his product still adds something above and beyond what the DSD does, and I'm satisfied with his expertise on that. Since then I have moved onto a Bricasti M1 and I haven't had a chance to A/B the SM with it, but that's a fine idea, maybe this weekend.

andresz

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #13 on: 15 Oct 2018, 03:38 am »
Just had my Empirical Audio Syncromesh modded by Steve Nugent to his new 7 psec configuration and the result is nothing short of stunning. I had his previous upgrade done a while ago and that was a step up from an already seriously high level of performance.

The lift in cohesion in resolution combined with organic 3D is outstanding as are decay trails and harmonics. No edge but an increase in detail - which is very hard to get. Best described as a high quality turntable.

In my rig, the Syncromesh is fed by Argento reference digital cabling and the output is a Shunyata SIGMA BNC. The cost of the cables are multiples of the Synchromesh price. The DAC is a Metrum Adagio NOS which is very detailed especially when run direct to power amps. So it is a real test for the quality of ancillaries.

The Syncromesh makes my system shine and I recommend very highly. Never underestimate the power of the clock in a system. At 7 psec - that’s extraordinary.
Also recommend a high quality linear power supply. I use an Sbooster with Shunyata Alpha PC but I suspect the Paul Hynes LPS Empirical Audio is a killer combination.

dbeau

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #14 on: 15 Oct 2018, 05:26 pm »
Andrez: "Also recommend a high quality linear power supply."
I recently added the Empirical SM between a Sonos connect and Berkeley preamp and it surprised me in the amount of detail and SQ improvement gained that I thought  the separately sold power suppily was not needed, BUT Steve said it would improve SQ again and your experience leads me to
thinking that the $800 is probably worth it.  Hurts financially because his Final Drives are probably a next choice.  No regrets it's enjoyable when positive and continues thereafter.

path73

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Re: Another Synchro-Mesh jitter breakthrough
« Reply #15 on: 16 Oct 2018, 07:00 pm »
The Dynamo power supply that Steve provides is a great improvement to my now older Synchro Mesh, highly recommended. I really want to get it upgraded, but parting with it will not be easy... Especially what it does to the digital out of my tv box is nothing short of spectacular. I use a digital source switcher and delay box upstream from SM which does its magic on all of my digital sources.
/patrick
« Last Edit: 16 Oct 2018, 09:23 pm by path73 »