Question: If i remember well some of you were (still) trying the Amanero-Hermes-Cronus/rhea boards with the dsc252. What are your experiences this far with regard to sound quality improvements? Which clocks are supposed to be the better choice? And is it a straight forward implementation between the 3 boards and with the dsc252 or is it more complicated?
I saw the cronus boards are back in stock now.
I saw the cronus boards are back in stock now.
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I have a quite powerful computer with 600-650W consumption at full load. It's a must to handle all HQP filters at DSD512. But USB power and signal lines became very noisy. Direct connection PC USB output to DSC leads to a very "dirty" sound. That's why I need to use NAA.
I used NUC with Core I3 as NAA, but some time ago decided to try different SoC (BBB, RPI, Odroid C2). My configuration: server with Roon Core + HQP -- NAA -- Amanero -- DSC.
BBB is not capable to work at DSD512.
RPI can, but sounds worse than NUC (my subjective opinion).
Odriod C2 as NAA souds much better then NUC with power consumption only a few watts.
BBB with Botic driver (kernel) can supply Native DSD512 via I2S. After isolator/recklocker (Cronus+Hermes or McFIFO) we can have perfect I2S stream at DSC input with MUTE and DSD_ON signals (no pops) w/o using USB-I2S interface.
I hope that this will give much better result then Advanced Amanero.
I decided to try isolator/reclocker with BBB after very positive feedback from luchoh. And yes, initially I wanted to buy Hermes-Cronus-Rhea, but they back in stock only today
. After some consideration, I bought McFIFO + McDualXO + Crystek CCHD957 clocks (45.1584 MHz and 49.1520 MHz pair) two weeks ago.I hope for a good result, but need some time for testing and comparison with my Advanced Amanero (Crystek 24.5760 MHz + 22.5792 MHz pair).
As for clocks - Ian (iancanada) highly recommends Pulsar Clock (90.3168 MHz + 98.3040 MHz pair, ~400 euro each). Quite expensive
. From his point of view CCHD957 is a "good choice at a reasonable price".
Vit, Thanks for your well written summaries above and insights/experiences! Very helpful! I am looking forward to hear your opinion about the 'iancanada' route.
How about progress at Luchoc's and Nautibuoy's? Are you 'innovators' still working on the BBB --> hermes-Cronus/Rhea route ? or did you also try the PC--> amanero-hermes-Cronus/Rhea route ? or any other?
How about progress at Luchoc's and Nautibuoy's? Are you 'innovators' still working on the BBB --> hermes-Cronus/Rhea route ? or did you also try the PC--> amanero-hermes-Cronus/Rhea route ? or any other?
What about using UltraCap LPS-1 along with ISO Regen for USB?
I'm using Roon audio with DSD 256 resampling for now but intend adding HQP for the resampling part for Roon later on. I'm using a Windows 2016 server with dual Xeon 8 core, 16 threads each, should be sufficient for anything...
For now, can anyone tell me which setting would be best to use since I'm clueless about these settings? "**" is what I'm currently using but don't know what it does for processing but it does sound really good.
Sample Rate Conversion Filer:
Precise - Linear Phase**
Precise - Minimum Phase
Smooth - Linear Phase
Smooth - Minimum Phase
DSD Processing Settings:
5th Order
7th Order
5th Order (CLANS)
7th Order (CLANS)**
Did anyone compared the Roon DSD reults with HQP? If yes, is it as good, better, much better?
Thanks
Do
I'm using Roon audio with DSD 256 resampling for now but intend adding HQP for the resampling part for Roon later on. I'm using a Windows 2016 server with dual Xeon 8 core, 16 threads each, should be sufficient for anything...
For now, can anyone tell me which setting would be best to use since I'm clueless about these settings? "**" is what I'm currently using but don't know what it does for processing but it does sound really good.
Sample Rate Conversion Filer:
Precise - Linear Phase**
Precise - Minimum Phase
Smooth - Linear Phase
Smooth - Minimum Phase
DSD Processing Settings:
5th Order
7th Order
5th Order (CLANS)
7th Order (CLANS)**
Did anyone compared the Roon DSD reults with HQP? If yes, is it as good, better, much better?
Thanks
Do
I decided to try isolator/reclocker with BBB after very positive feedback from luchoh. And yes, initially I wanted to buy Hermes-Cronus-Rhea, but they back in stock only today
I hope for a good result, but need some time for testing and comparison with my Advanced Amanero (Crystek 24.5760 MHz + 22.5792 MHz pair).
As for clocks - Ian (iancanada) highly recommends Pulsar Clock (90.3168 MHz + 98.3040 MHz pair, ~400 euro each). Quite expensive
From his point of view CCHD957 is a "good choice at a reasonable price".
I'm your fan!
Thanks for reply Vit, can I please request some minor clarification?
I am familar with pinout for DIYINHK board and know how to connect DSD left, DSD right, DSD clock to DSC 2.5 board. But - what do I connect to the DSD_ON pin on DSC 2.5 board?
MUTE = Low - DSC is unmuted - does this mean grounded MUTE pin on DSC 2.5? Or leaving it open?
Thanks, Hazard
I am familar with pinout for DIYINHK board and know how to connect DSD left, DSD right, DSD clock to DSC 2.5 board. But - what do I connect to the DSD_ON pin on DSC 2.5 board?
MUTE = High - DSC is muted - does high mean applying 3.3V to MUTE pin on DSC 2.5?
MUTE = Low - DSC is unmuted - does this mean grounded MUTE pin on DSC 2.5? Or leaving it open?
Thanks, Hazard
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You have DSDON pin on XMOS board (on my own it is). Connect it to PIN 7 on DSC 2.5 (DSD_ON), have a look at page 4 of User Gude for pinout details.
Yes - High ~ 3.3V, Low ~ 0V.
As for MUTE - the easiest way is to leave it open. But you can ground it too.
I decided to try isolator/reclocker with BBB after very positive feedback from luchoh. And yes, initially I wanted to buy Hermes-Cronus-Rhea, but they back in stock only today
I hope for a good result, but need some time for testing and comparison with my Advanced Amanero (Crystek 24.5760 MHz + 22.5792 MHz pair).
As for clocks - Ian (iancanada) highly recommends Pulsar Clock (90.3168 MHz + 98.3040 MHz pair, ~400 euro each). Quite expensive
From his point of view CCHD957 is a "good choice at a reasonable price".
Vit,
Looking forward to your test. Can I ask a favor to document the various connections from McFIFO/MCDualXO setup. If that setup works well I would like to go that route and avoid USB completely.
Ha ha In feel a bit silly. I have had 3 iterations of the DIYINHK USB board over the last few years, starting with their DSD128 board. As I don't need the DSD_ON signal for my DAC I don't use this pin and didn't realise it was there. Thanks for the tip! Funnily enough, my 2nd USB board (DSD256) actually has a mute pin - don't know why the new DSD512 board has omitted this pin.
Question for you, since our DAC is never going to receive PCM it shouldn't need a DSD_ON signal - couldn't we just connect the DSD_ON pin, on DSC 2.5, directly to 3.3V supply? Not that this is any easier.
I cant recommend it.
My Isolated XMOS 768kHz interface w/o input DSD signal switches to PCM 96K (DSD_ON = 0). So you will have LRCK, DATA (PCM zero signal) at D1, D2 input pins of DSC.
Then, if you wire DSC's DSD_ON to 3.3V you may have a loud pop at the moment of switching DSD-PCM every time you stop play.
In any case, without MUTE you will have loud pop at the beginning of track, so I'd recommend to use your board with MUTE pin. In this case you can wire DSD_ON on DSC to 3.3V, MUTE to MUTE on DSC.
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You can use any online calculator. For example: https://www.digikey.com/en/resource...rsion-calculator-parallel-and-series-resistor
You need to get a total resistance of 5K6-6K2.
The load resistance is selected individually for each type of transformer using an oscilloscope. I can not say what resistance should be for other transformers. In some cases, additional resistance is not required. Usually this is written in the datasheet.