And I have friend with a 22000 dollar dac considering to buy this dac instead. Going to compare tomorrow.
Regarding the S/PDIF >48KHz locking issue, I think kgkim has found the reason
#1070
Through oscillator, it seems the stock circuits does not produce proper TTL pulse pattern for ES9018, causing widespread of incompatibility issue. Probably the production board was not thoroughly tested with 96K/192K S/PDIF source before mass production.
Can someone verify the output of LMV7219 with oscillator, with various passive components combination? This might the way to figure out a working solution.
#1070
Through oscillator, it seems the stock circuits does not produce proper TTL pulse pattern for ES9018, causing widespread of incompatibility issue. Probably the production board was not thoroughly tested with 96K/192K S/PDIF source before mass production.
Can someone verify the output of LMV7219 with oscillator, with various passive components combination? This might the way to figure out a working solution.
Attachments
So you say a 0.1uF before the spdif transformer will solve the problem for any source ?
coax spdif at 192KHz
Actually I have only the first release of this DAC, I should receive soon another board.
In this first release was present only a capacitor before the op-amp on spdif signal.
Here is playing with XMOS USB-SPDIF source at 192KHz without problems.
I am using this old DAC module to test the new firmware and controller working with 4x20 LCD.
Actually I have only the first release of this DAC, I should receive soon another board.
In this first release was present only a capacitor before the op-amp on spdif signal.
Here is playing with XMOS USB-SPDIF source at 192KHz without problems.
I am using this old DAC module to test the new firmware and controller working with 4x20 LCD.
Attachments
Hi Audiodesign
Tomorrow I will try the dac in the recording studio.
What configuration do you suggest to use for AES/EBU and SPDIF inputs?
Thanks
Tomorrow I will try the dac in the recording studio.
What configuration do you suggest to use for AES/EBU and SPDIF inputs?
Thanks
You need to add for both these input the capacitor after the spdif input transformer.
2uF MKT is good, there is a pcb jump to cut called Cxx, I don't have the DAC module now to indicate the xx numbers.
Based on kgkim's findings, the TTL pulse looks slightly better but I'm afraid it is still not enough. Otherwise he would not design his own circuits to overcome the issue.
I'm also wondering would substituting Murata DA101C pulse transfo with Newava S22083 make a different? Seems unlikely as DA101C works in other DACs.
PS.
My typo error in #1922, should be "oscilloscope", not "oscillator".
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I second that notion "this is my best dac until now" - or stg like this. That is true I have never had one for 22000 neither for 2000. It is better on LowRes than my older equipments too.
I am listening to the dac now with an Xmos i2s board it is better than Amanero - I only used Amanero with usb power. I have tried the dac with Xmos DS, KS, Wasapi event, Asio driver in foobar. All works except dsd it works only with Asio. Conversion to pcm 352k is ok with KS and Wasapi. I think now too my problem is with Windows or the Amanero drivers not with the dac. Maybe I do not know some driver, windows or foobar settings.
I am listening to the dac now with an Xmos i2s board it is better than Amanero - I only used Amanero with usb power. I have tried the dac with Xmos DS, KS, Wasapi event, Asio driver in foobar. All works except dsd it works only with Asio. Conversion to pcm 352k is ok with KS and Wasapi. I think now too my problem is with Windows or the Amanero drivers not with the dac. Maybe I do not know some driver, windows or foobar settings.
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To play DSD with Foobar2000 is necessary ASIO driver or ASIO4ALL driver proxy.
Why not use JRiver, it is very simple and it play both format without problems.
I uses mac and JRiver and it plays all pcm from44k to 384k and dsd64/128 without issues at all..!!
Because I imagined before I bought the dac stg like a silent mini pc with ssd and a minimal windows configuration(an xp enough -unfortunately there is no sacd iso playback in linux yet) remote contollable by android and connected to a NAS by wifi (as far as I tried wifi may work) or ethernet. Foobar is good for this and will be good I think when all commercial developer abandone xp.
Somebody has to port input_sacd to linux and all things can go to the NAS
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coax spdif at 192KHz
Hi guys!
Problem solved 😀
Lmv7219 replaced with that acquired from rs-components.
Now locked from 32khz to 192khz without any glitches.
Tried with two input configurations:
1) input transformer + 0.1uF and 75r to ground
2) no input transformer + 0.1uF and 75r to ground
Tried both configurations with 1mt TV cable and 0.5mt tasker c123 cable.
Tomorrow I'll replace Lmv7219 of AES/EBU input and go to recording studio for the test...
Hi guys!
Problem solved 😀
Lmv7219 replaced with that acquired from rs-components.
Now locked from 32khz to 192khz without any glitches.
Tried with two input configurations:
1) input transformer + 0.1uF and 75r to ground
2) no input transformer + 0.1uF and 75r to ground
Tried both configurations with 1mt TV cable and 0.5mt tasker c123 cable.
Tomorrow I'll replace Lmv7219 of AES/EBU input and go to recording studio for the test...
Attachments
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Erlend, you're talking about the spdif input transformer, right? Not the audio output transformer. 😕
But it can not lock on 96 khz.
I am going to change RCA socket to Wbt 75 ohm Next Gen.
I compared it with Emm Labs 22000 dollar Dac tonight. I used it with 100 ohm Amtrans I/V resistors into an 10 kohm input Preamp. The Emm Lab was better. Then I tried to change the high capacity cable to Bertram low capacity. Now the difference was smaller. Then we used the Dac direct into 47 kohm input 750 W Musical Fidelity monoamps.
Now we was not sure if there was any difference between HQ dac and Emm Labs.
Probably a stupid question - how do I "directly" connect the DAC to a power amp bypassing the I/V boards? Perhaps we need a wiki type page to document all the various tweaks and mods?
Super Output for DAC
below is the circuit diagram for DAC output, use the LL1684 transformer, can use the V DAC output. For example: ES9018 .....
And some PCB pictures, invite you to watch!
below is the circuit diagram for DAC output, use the LL1684 transformer, can use the V DAC output. For example: ES9018 .....
And some PCB pictures, invite you to watch!
Attachments
Hi smoothquark!
you get the USB, and you test it ??
please tel me all your dac! Thanks many many!
quanghao
you get the USB, and you test it ??
please tel me all your dac! Thanks many many!
quanghao
There's no indication of firmware version during startup. I'll take the photo, but it seems to have all the mods on the shunt.
BTW, tested USB Amanero using Daphile player, smooth from 44 - 192, including DSD files. I don't use other digital inputs as I will use it 100% for computer based music setup.
Going to test V-out mode & remove the Amanero regulator.
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