2. digital
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.? Digital Reclocking and syncing clocks does anyone know the correct Answrrsb

Hello To all ,many Audiophiles I have found do not  even know what a Digital reclocker is, and what does it do exactly , and how it helps the incoming signal.

and the Bigger question is Syncing  the clock to Dac.

for example with Denafrips Reclocker , the most versatile I have seen with input outputs especially from Hermes, Gaia DCC reclockers  most inputs,outputs,       they have both   45,and 48 MHZ  for clock sync. ,other dacs clocks may use 5-10 MHz  ,this gets a bit confusing.
Here is a big question , say you have a very good dac with over clock ⏰, 

Is there any advantage to syncing clock say from cheaper Iris DDC reclocker  ,to the  very good say Terminator oven  controlled clock. The Big  question is how does this work? Does the better clock in the dac dominate or influence  the lesser  clocks ?

or don’t bother syncing clock with cheaper Iris DDC ?  Do you have to have a reclocker with = quality ⏰ clock  to the dac to  make it  a Sonic improvement ? 
these are the questions  no one I know has been able to answer with absolute knowledge.

just the reclocker itself is worth wild for. It filters and cleans the incoming digital signal ,through usb,BNC,or coaxial cable, then reclocks signal to dac to have a pristine signal to read.. in this respect even a good basic reclocker like Iris would be very good ,on pontus and even Venus dac ,and Holo springs worked well 

for $600, next Big step the $1250 Hermes better everything including oven controlled clocks ,if you can afford it.  Syncing clocking is the big Question is there any benefit going from a lesser Iris clock in the Iris DDC reclocker syncing clock to say a Terminator + with far superior oven  clocks?Is there any benefit ? If so why ?  Thank you to Anyone who may have the expertise to logically explain this.
Hopefully Alvin Chee will see this ,Happy listening to  your music .🎶 🎵 

jimob
cindyment's avatar
cindyment
351 posts
 

@jimob ,

 

I am a little disappointed in Denafrips sending you a review that says,

 

ll DACs are not created equal, especially when it comes to dealing with noise, jitter and USB. For example, the Holo Audio May DAC (see review) was run through its measured paces by John Atkinson at Stereophile where he found, “In almost every way, the HoloAudio May (Level 3) is the best-measuring D/A processor I have encountered”.  According to GoldenSound’s measurements and his interpretation thereof, the May DAC’s FIFO buffer did a great job of rejecting word-clock jitter. I would assume, based on its measured performance and my listening impressions, that the Holo May DAC may not need a DDC like the IRIS since it does such a great job with USB all on its own. [footnote 2]


Almost every USB DAC made today, from probably $25 and up, is asynchronous. That means that the USB data transfer is independent of the DAC clocking. Virtually every USB DAC will have a buffer/fifo now. That the reviewer is not aware of this is shocking, but I am not surprised.

Denafrips collects and distributes these reviews just like everyone else, and gladly sends them to anyone who will listen. They appear to make great products, but they are counting on the uneducated consumer (and reviewer) as much as anyone.

 

 

jimob OP
88 posts
 

The holo May is very good , the Terminators have been improved as of April 2021

and in one specific better measurement in one area ,many times not quite as good as others ,they both sound excellent in their own ways..  Reclocking cleans  digital signal  and makes it easier to read when the dac get the data puts it in a buffer then does a bunch of other things before final conversion ,in good dacs a lot of information way over my digital knowledge base .

cindyment's avatar
cindyment
351 posts
 

Reclocking cleans  digital signal  and makes it easier to read when the dac get the data puts it in a buffer then does a bunch of other things before final conversion ,in good dacs a lot of information way over my digital knowledge base .

 

It is not over my digital knowledge base. This "cleaning" the digital signal is a very suspect statement (not by you, but claims by people selling it). Even the cheapest streamer has a very clean digital signal output, with potentially the exception of some electrical noise which is not difficult to filter out. That can in rare instances affect SPDIF, but a good DAC should already isolate SPDIF. It will not effect the data, but it may introduce small amounts of jitter, something most modern "good" DACs eliminate without much trouble. We are talking streamer level jitter now, not the old large amounts of jitter from CD players. With USB, this is not remotely an issue. Your USB will work or not. If it works, the data is getting there, totally uncorrupted, and as noted, the timing on USB has no impact on the DAC clock.

jimob OP
88 posts
 

Reclocker works great for even decent streamers are far from a noise free environment ,try s good reclocker ,then you will see 

if using a computer a must ? As well as a uptone Ether regen on the Ethernet input 

noticeable improvement.

big_greg
6,724 posts
 

I bought a well regarded reclocker and can't detect that it makes any difference whatsoever.  Thankfully, it was second hand and relatively inexpensive.

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