[3rdmortal]

Sorry, i didn`t understand clearly. So if i want to change a clock is it an easy fix or you need to use soldering tool for that? Thank you in advance. 

 

[b0bb]

  Sorry, i didn`t understand clearly. So if i want to change a clock is it an easy fix or you need to use soldering tool for that? Thank you in advance. 

 
Soldering tool required to remove the existing clock and to install the replacement clock.

 

[fjc36]

   
That is an open question, if you are looking to buy a DAC now, get a conventional DAC like the LKS and check back in a few years to see if there is sufficient market interest in MQA  ( things like DACS supporting MQA and MQA music )

Yes, I did my  study for buying a new  Hi-RES DAC to catch up the digital  stream trend. As a DIY hobbist and a classical music fan, I do tell the sonic difference between CD and SACD (serious recording). So, the MQA will not be popular over nights, months. Few years is fine for most of us, I guess.

 

[b0bb]

Updated my XO jitter calculator to include data from the Pulsar OCXO and the Accusilicon AS318B.
The Accusilicon is used in the Gustard X20U.
 
The Pulsar OCXO jitter is 10x less than the conventional XOs.
Nice to see Accusilicon in something in the X20U's price category, it is unfortunate Gustard used this on the USB bit clock and not the DAC master clock XO.

 

     AOCJY1            fc=  10.00MHz    BW=(10.00Hz-10.00kHz)      RMS Jitter: 1596.037fs
     CCHD-575         fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter: 151.769fs
     CCHD-950         fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter: 226.627fs
     AS318-B            fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter: 200.494fs
     Pulsar Max        fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter: 35.115fs
     Pulsar Typ         fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter: 20.174fs
     nz2520sd_22M  fc=  22.58MHz    BW=(10.00Hz-10.00kHz)      RMS Jitter: 62.696fs
     cchd575_22M    fc=  22.58MHz    BW=(10.00Hz-10.00kHz)      RMS Jitter: 221.180fs
     CCHD-575 DS    fc= 100.00MHz   BW=(10.00kHz-100.00MHz) RMS Jitter: 82.281fs
     Maxim Ex.          fc= 155.52MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter: 4074.163fs

 

[fjc36]

Just read about the new generation ESS 3038 pro, and the obslete of 3018. Curous about its development on the market. Just before I like to step in the cleared water, it is getting muddy. May someone try distinguish the difference btw 9018 and 9028, since it seems interchangeable, an upgrade?

 

[fjc36]

It seems the difference btw ESS9038pro and 9028pro is on the programablity. The block diagrams are the same. General application and benifits are the same. I notice that one difference stays on the application of digital filters. 9028pro has eight pre-set filters, 9038pro allows customer built others, may be its very important. Other deviations besides THD and noise level?
 
Can ESS chip raise the sampling freq. on the input digital data to make analog more close to the original like the CHORD DAVE trying to acheive?

 

[prot]

The 9028 is a drop-in replacement for 9018 and 9038 is not. That would indicate that the chips and/or firmware are quite different.
And IIRC, the THD and DNR measurments for 9038 are 5-10db better.

And btw this seems to be the first Dac with a 9038 chip http://www.digitalaudioreview.net/2016/05/ayre-acoustics-show-off-qx-5-twenty-digital-hub/

b0bb
That ayre uses some interesting clocks from Morion http://www.morion.com.ru/eng/oscillators/ocxo
Some of them look quite fit for an Ess Dac, maybe you can add them to your database

 

[fjc36]

Sorry, corrections, it is ES 9028pro and 9038pro, not any 2028 or 3038.
May be same block diagram and function do not represent exact layout.  Interesting.
Some one saying that, 9028pro good at two-channel , and 9038pro good at multi-channel, really?  

 

[b0bb]

MV269 is the only OCXO in Morion's range that will work in the LKS as a straight drop-in, r.m.s jitter is about 451fs.
http://www.morion.com.ru/catalog_pdf/33_MV269.pdf
Morion is not widely available. Ayre likely has theirs custom made.
 
Abracon        AOCJY1              fc=  10.00MHz    BW=(10.00Hz-10.00kHz)      RMS Jitter: 1596.037fs
Crystek         CCHD-575           fc= 100.00MHz  BW=(10.00Hz-10.00kHz)       RMS Jitter: 151.769fs
Crystek         CCHD-950           fc= 100.00MHz  BW=(10.00Hz-10.00kHz)       RMS Jitter: 226.627fs
Accusilicon   AS318-B              fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:  200.494fs
Pulsar           Pulsar Max          fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:    35.115fs
Pulsar           Pulsar Typ           fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:    20.174fs
Morion         MV269                 fc= 100.00MHz  BW=(10.00Hz-10.00kHz)      RMS Jitter: 450.651fs
NDK             nz2520sd_22M    fc=  22.58MHz    BW=(10.00Hz-10.00kHz)      RMS Jitter:    62.696fs
Crystek        cchd575_22M       fc=  22.58MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:   221.180fs
Crystek        CCHD-575 DS      fc= 100.00MHz  BW=(10.00kHz-100.00MHz) RMS Jitter:     82.281fs
Maxim          Example               fc= 155.52MHz  BW=(10.00Hz-10.00kHz)      RMS Jitter: 4074.163fs

 

[abartels]

  MV269 is the only OCXO in Morion's range that will work in the LKS as a straight drop-in, r.m.s jitter is about 451ps.
http://www.morion.com.ru/catalog_pdf/33_MV269.pdf
Morion is not widely available. Ayre likely has theirs custom made.
 
Abracon        AOCJY1              fc=  10.00MHz    BW=(10.00Hz-10.00kHz)      RMS Jitter: 1596.037fs
Crystek         CCHD-575           fc= 100.00MHz  BW=(10.00Hz-10.00kHz)       RMS Jitter: 151.769fs
Crystek         CCHD-950           fc= 100.00MHz  BW=(10.00Hz-10.00kHz)       RMS Jitter: 226.627fs
Accusilicon   AS318-B              fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:  200.494fs
Pulsar           Pulsar Max          fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:    35.115fs
Pulsar           Pulsar Typ           fc= 100.00MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:    20.174fs
Morion         MV269                 fc= 100.00MHz  BW=(10.00Hz-10.00kHz)      RMS Jitter: 450.651fs
NDK             nz2520sd_22M    fc=  22.58MHz    BW=(10.00Hz-10.00kHz)      RMS Jitter:    62.696fs
Crystek        cchd575_22M       fc=  22.58MHz   BW=(10.00Hz-10.00kHz)      RMS Jitter:   221.180fs
Crystek        CCHD-575 DS      fc= 100.00MHz  BW=(10.00kHz-100.00MHz) RMS Jitter:     82.281fs
Maxim          Example               fc= 155.52MHz  BW=(10.00Hz-10.00kHz)      RMS Jitter: 4074.163fs

 
Yes I suppose you're right, MV269 is far from ideal..... The Pulsar's are really good, but very expensive
NDK-SD seems to be the very good choice, but not in every circuit, as you told me before
Btw, I've got samples from XpressO Ultra (FXU-HC73x series) from FOX Electronics, will try to replace the
standard FXO-HC73x's on DAC+Pro. Should be rather audible, they have about 1/3 of jitter 

 

[prot]

Thx for the update b0bb.
I was actually looking at http://www.morion.com.ru/catalog_pdf/39_MV317.pdf
Better phasenoise numbers, excellent stability, relatively low power, etc ... unfortunatelly only comes with 5/12V inputs so not an easy drop-in replacement for LKS.
Might be worth the effort though .. the Morions seem to be quite reasonably priced.
Couldnt find a price for that model but here's a similar one selling for peanuts https://www.ebay.de/itm/262495153142

abartels
Does the new ndk duculon fit the reqs for your dac+ board ?
http://www.ndk.com/en/ad/2013/001/pdf/c_NH47M47LA_e.pdf. At least according to their marketing it is "the best for audio". The phase noise looks excellent and they should be affordable.

 

[b0bb]

Thx for the update @b0bb.
I was actually looking at http://www.morion.com.ru/catalog_pdf/39_MV317.pdf
 

It has the wrong type of output, sinewave.

 

[abartels]

Thx for the update @b0bb.
I was actually looking at http://www.morion.com.ru/catalog_pdf/39_MV317.pdf
Better phasenoise numbers, excellent stability, relatively low power, etc ... unfortunatelly only comes with 5/12V inputs so not an easy drop-in replacement for LKS.
Might be worth the effort though .. the Morions seem to be quite reasonably priced.
Couldnt find a price for that model but here's a similar one selling for peanuts https://www.ebay.de/itm/262495153142

@abartels
Does the new ndk duculon fit the reqs for your dac+ board ?
http://www.ndk.com/en/ad/2013/001/pdf/c_NH47M47LA_e.pdf. At least according to their marketing it is "the best for audio". The phase noise looks excellent and they should be affordable.

 
The DuCULoN is available at 45.1584 MHz and 49.152MHz only. DAC+Pro would work with the HCMOS version, but AK4495 needs 22.5792MHz and 24.576MHz.
But, more interesting is it's pricelevel, they go for about $1550 which is not what I call affordable, maybe you've got a stash of dollars somewhere?
Feel free to surprise me, hahahahaha 

 

 

[justbenice]

I'v tried a few opamps in my LKS MH-DA003 :
 
+HDAM china made opamps from Ebay  : 34usd/ a pair
+Supreme Sound Opamp V5i : 70USD/a pair
+Muses01 : 92,5USD/a pair 
 


 
 
+ The HDAM china opamps : The mid and bass was ok, but the treble was worst, very high and thin treble. 
+ Burson  V5i :  Very good opamps, it have very detail and clear treble, good and thick mid, deep and very clear bass. It have very good balance in Treble-Mid-Bass. 
+ Muses01 : Like it name, muses, it have sweet mid, sweet bass, but the treble was less clear and detail as V5i.
 
Overall, i like the V5i more because it have clear and detail treble an very balance in Treble - Mid - Bass so the sound stage wider, make me feel  enjoy to listen music.
The muses01 is good if you like some slow, soft music like Jazz. 

 

[abartels]

  I'v tried a few opamps in my LKS MH-DA003 :
 
+HDAM china made opamps from Ebay  : 34usd/ a pair
+Supreme Sound Opamp V5i : 70USD/a pair
+Muses01 : 92,5USD/a pair 
 


 
 
+ The HDAM china opamps : The mid and bass was ok, but the treble was worst, very high and thin treble. 
+ Burson  V5i :  Very good opamps, it have very detail and clear treble, good and thick mid, deep and very clear bass. It have very good balance in Treble-Mid-Bass. 
+ Muses01 : Like it name, muses, it have sweet mid, sweet bass, but the treble was less clear and detail as V5i.
 
Overall, i like the V5i more because it have clear and detail treble an very balance in Treble - Mid - Bass so the sound stage wider, make me feel  enjoy to listen music.
The muses01 is good if you like some slow, soft music like Jazz. 

 
Did they all get 150 hours to settle in? 150 hours PLAYING music?