I have the same wonder, hope any people already put dam to action will have some review...
This reminds me sudden amplitude offset caused by DSP filter, if the filter isn't always on but engaged after a certain event (clock lock?). If this is the case, fading in or out the amplitude within DSP filter would help.
TNT, does this happen during mid song changes only? Or during some silent (end of song -> beginning of next song) changes as well?
Last edited:
You can take power from either of the other +3.3V pins and connect to "ISO +3.3V.
Please note that you can't draw much power from the internal linear 3.3V regulator, just enough to supply the isolators, potmeter and poslink receiver....
Ok, so it pops when tracks changing fs. Confirmed. NB: with Amanero Combo384.
Between pops, it rocks 😉
I'll get back with more impressions. I'm positive.
//
Between pops, it rocks 😉
I'll get back with more impressions. I'm positive.
//
Last edited:
No, then you break the isolation. The unit connecting via I2S must supply the 3,3V. Thats the whole trick.
Amanero has an 3,3V outlet intended exactly for this. sIf your unit does not have it, better supply it from a completely separate source.
//
Hi Søren,
I have an extra Amanero USB interface. The offer still stand if you want to borrow one for test?
Btw. Haven't ordered a DAC yet as I haven't got much time for toying around with one.
Mogens
I have an extra Amanero USB interface. The offer still stand if you want to borrow one for test?
Btw. Haven't ordered a DAC yet as I haven't got much time for toying around with one.
Mogens
Hello Jorgen,
I opened a thread in the digital section which answer to this question ! With reference for some traffos for a direct AC ! But it can be fed in DC with a higher voltage : all is explained in this thread or above (more than -+ 15 V peaks : the DAC will be fried !)
@ TNT or Soren : does the isolator needs an external 3.3V for all the entries ? Idem for spidf ? Bypassed if not feeded by voltage or dead silence ?
Heve you been trying also anythingelse than I2S ? Does it pop as well ?
Usually I couldn't care less for what people think about the sound of a device but your setup looks like something that has been well optimized and I have pretty good experience with almost the exact set of boards so your "positive" is something good, if you are not immediately disappointed that makes me happy.
The board I am getting will be a test setup for a friend and the plan is to test a bunch of stuff on the output so it will probably sound quite different in the end but if you are not finding something generally wrong the DAC that is quite promising, the acko DAC is one really sophisticated attempt at taming the ESS chip.
If you look at the drawing Sören provided of the board, there is a box surrounding the inputs/outputs that is "isolated". None of these are used for galvanic or opto s/pdif.
- Galvanic s/pdif (shoild) use a transformer which is passive alas, no power needed.
- Opto requires a receiver module which is active and needs power - however as the glassfibre cable isolates the dad for outside, no isolation on-board is needed and this, the device can be seen to belong to the core DAC itself (the isolated part) so power should be taken from S2 but from pins outside the ISO box as these provide power (the ISO power must be fed power)
I only have USB possibilities.
//
- Galvanic s/pdif (shoild) use a transformer which is passive alas, no power needed.
- Opto requires a receiver module which is active and needs power - however as the glassfibre cable isolates the dad for outside, no isolation on-board is needed and this, the device can be seen to belong to the core DAC itself (the isolated part) so power should be taken from S2 but from pins outside the ISO box as these provide power (the ISO power must be fed power)
I only have USB possibilities.
//
Last edited:
Hi guys,
Just letting you know that I have began work on adapting my TFT HiFiDuino Arduino code to control the Soekris DAC. I do not have my board yet (I am expecting it this Friday) so for the moment I am just getting the basics right.
I am using an Arduino DUE with a 3.2" TFT screen. I will be interfacing to the DAC through the Serial3 port of the DUE. So far I have implemented just the volume functionality, since it is the only thing Soren has hinted to ("volume will t.ex. be "V-30" to set the volume to -30 db") but serial is easy, so it will take very little time for me (or anyone for that matter) to implement the rest of the functionality.
Of course it is fully IR remote controlled, has input memories, etc etc (all the goodies that TFT HiFiDuino has).
Here is a teaser:
Just letting you know that I have began work on adapting my TFT HiFiDuino Arduino code to control the Soekris DAC. I do not have my board yet (I am expecting it this Friday) so for the moment I am just getting the basics right.
I am using an Arduino DUE with a 3.2" TFT screen. I will be interfacing to the DAC through the Serial3 port of the DUE. So far I have implemented just the volume functionality, since it is the only thing Soren has hinted to ("volume will t.ex. be "V-30" to set the volume to -30 db") but serial is easy, so it will take very little time for me (or anyone for that matter) to implement the rest of the functionality.
Of course it is fully IR remote controlled, has input memories, etc etc (all the goodies that TFT HiFiDuino has).
Here is a teaser:
Attachments
I can't see this - see attached pic.
I see "Digital Output" but the word "USB" is only to be seen in the advanced settings and it's about this HUB fix.
//
Attachments
Last edited:
Thanks - looks interesting. How does one manipulate this settings?
//
Aha its not a setting but a control out pin.... Sören, can this be exploited somehow?
Last edited:
Hi guys,
Just letting you know that I have began work on adapting my TFT HiFiDuino Arduino code to control the Soekris DAC. I do not have my board yet (I am expecting it this Friday) so for the moment I am just getting the basics right.
I am using an Arduino DUE with a 3.2" TFT screen. I will be interfacing to the DAC through the Serial3 port of the DUE. So far I have implemented just the volume functionality, since it is the only thing Soren has hinted to ("volume will t.ex. be "V-30" to set the volume to -30 db") but serial is easy, so it will take very little time for me (or anyone for that matter) to implement the rest of the functionality.
Of course it is fully IR remote controlled, has input memories, etc etc (all the goodies that TFT HiFiDuino has).
Here is a teaser:
Wow amazing.....
I am planing to control both sdtrans384 and dac over arduino mini pro with apple remote.
@TNT:
Hi TNT,
It can be set up in the software configuring the Amanero (config tools - I use vers. 1.16 but there are newer).
There's an output that can either be used to indicate 24.576 MHz clock or Mute condition (see attachment). Since there's another output that can be used to indicate 22.579 MHz the first one may be used for mute.
BTW: In my experience the Amanero is prone to clicks & pops when changing either sample rate or tracks - mostly so in foobar and less so in JRiver (although it's still there to some extent). I'd like to note though that I haven't tried using this mute option so could be that this changes it - which would be very attractive actually ...
Best regards,
Jesper
Hi TNT,
It can be set up in the software configuring the Amanero (config tools - I use vers. 1.16 but there are newer).
There's an output that can either be used to indicate 24.576 MHz clock or Mute condition (see attachment). Since there's another output that can be used to indicate 22.579 MHz the first one may be used for mute.
BTW: In my experience the Amanero is prone to clicks & pops when changing either sample rate or tracks - mostly so in foobar and less so in JRiver (although it's still there to some extent). I'd like to note though that I haven't tried using this mute option so could be that this changes it - which would be very attractive actually ...
Best regards,
Jesper
