Yeah, my scope is low-end and only 10mhz. Anyway, tnx for MCLK hint, I will compare it with my other dacs...
Regarding BCLK, resistors that affect the shape of the signal (influencing signal reflection...) are placed as close to the source as possible. Try replacing the original resistor on the PCB with a higher value. It is a resistor on the I2S output.
Did you measure that ugly BCLK shape before the DAC? If so, you should change the resistor on the reclocker PCB.
Yes, even without connection to dac looks the same. Also tried with 10kohm between bclk and gnd...
** Hope I post in the relevant topic. If not, please let me know **
Hello 🙂
I have built a Iancanada full streamer/dac.
So far I have built it using :
Power supply is :
As I want to keep RCA outputs, I’ll invest in nice i/v transformers.
Could you guide me on how to move forward with this DAC and help pinpoint what really makes an impact? I don’t want to waste time in useless improvements, but I am willing to do very well what could be good ones.
Here’s a list of ideas—which ones do you think are the most worthwhile? Can you help me to prioritize ?
Any help would be really appreciate ! Thanks a lot!
A - Supply the Dac ES9038Q2M board with separated powers. I power it from UcPure today. If so, which inputs are important to separate from J2 ? AVCC ? VCCA ? None ? Both ?
B - Supply the Rpi and the audio section of the PiStation with different +5V (Done and I like it)
C - On UcPure, following some Ian ideas from his blog : remove fuse, direct wiring and other hacks to power FifoPi and the Dac board
D - Shield the toroidals transformers
E - Shield the raspberry pi or put it away thanks to a gpio extension cable, or both
F - Add a copper plate between each module (fifopi, dac...) and ground it
G - Wire analog ground from fifopi to the dedicated pinpad on the stationpi
H - Wire analog ground to the earth of the wall socket
I - Other improvements ?
Have a very good day !
Hello 🙂
I have built a Iancanada full streamer/dac.
So far I have built it using :
- Station pi with separated +5V for pi and audio section
- Raspberry pi 4B
- FifoPiPro Q7 II with SC Pure clocks and PiMonitorPro
- Dac ES9038Q2M with MCLK connected to FifoPi
- I/V transformers board with upgraded resistors.
Power supply is :
- UcPure Quad for 3.3V
- LinearPi + UcConditionner for 5V
As I want to keep RCA outputs, I’ll invest in nice i/v transformers.
Could you guide me on how to move forward with this DAC and help pinpoint what really makes an impact? I don’t want to waste time in useless improvements, but I am willing to do very well what could be good ones.
Here’s a list of ideas—which ones do you think are the most worthwhile? Can you help me to prioritize ?
Any help would be really appreciate ! Thanks a lot!
A - Supply the Dac ES9038Q2M board with separated powers. I power it from UcPure today. If so, which inputs are important to separate from J2 ? AVCC ? VCCA ? None ? Both ?
B - Supply the Rpi and the audio section of the PiStation with different +5V (Done and I like it)
C - On UcPure, following some Ian ideas from his blog : remove fuse, direct wiring and other hacks to power FifoPi and the Dac board
D - Shield the toroidals transformers
E - Shield the raspberry pi or put it away thanks to a gpio extension cable, or both
F - Add a copper plate between each module (fifopi, dac...) and ground it
G - Wire analog ground from fifopi to the dedicated pinpad on the stationpi
H - Wire analog ground to the earth of the wall socket
I - Other improvements ?
Have a very good day !
I noticed the same with FIfoPiMa 1.5, regardless of S2 jumper (DoP on/off) on the board it always converts to PCM, I think this is related to configured dtoverlay in
/boot/firmware/config.txt. For me RPI4 only works with hifiberry-dacplus. I know that for RPI5 hifiberry-dacplus-std is recommended now. If you have rpi5 you can try it...I would recommend trying the IV trans from Ivan, they are very good. I originally purchased them and didn't appreciate them that much at the beginning... After playing around with other opinions, getting used to them + burn-in a bit, they are really my favorite now. Very natural, extending, transparent, and dynamic. I felt a little bit thin + a bit too detailed at the beginning --- coming from a tube output DAC. Then also tried OPA861 --- a bit too fast and tight for my taste, and ended up liking Ivan trans a lot lately.
I will try that when I get home again.
The rest just works as normal, I assume? Can't imagine why not...
And I use a RPi4 as well.
The xformer I/V is all I have used in my subsequent builds from over 4 yrs ago. Indeed, they are very, very nice sounding and don't require yet another +-PSU in your build.🙂 I'll probably will never go back to an active I/V output board.
Thank you ! I have ordered i/v transformers from ivan. He has started winding… 😉 so I’m happy to read that you like them !
What did you choose : cu:cu ? Ag:cu ? Ag:ag ? Active / passive ?
Glad to hear it 🙂
So you have the passive version (Ivan now proposes an active option)
What did you choose : cu:cu ? Ag:cu ? Ag:ag ?
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I have both inputs equipped with 3.3v shunt regulators and as close to the input as possible.
I have used Tentlabs shunt regulators for this, of course you can also use another brand.
Hello @iancanada, I have few questions about FifoPiMa 1.5 that could not be answered by manual.
- What
dtoverlayparameter should be set so it can be seen as DSD capable card by linux? Currently I am usinghifiberry-dacplusbut it can't play dsd without conversion to PCM. - Is there series resistor for BCLK/SCK on the board? (see my post)
So you have prefered to remove the jumpers on the board to disable the 3.3v distribution from J2 and feed through shunt regulators each input, right ?
What is your input on the shunt regulators ? Is it the same power supply shared across the shunt regulators ?
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@MathieuDoe, yes i removed the jumpers and provided j2 ucconditioner 3.3v and 3.3v shunt for j1 and j4.
i gave the tentlabs 3.3v shunt 7 volt as input.
As a tip from someone on another forum, I also placed an Elna Silmic capacitor in between.
https://www.tentlabs.com/Components/cdupgrade/shunt/assets/ShuntAppNoteAN04V02.pdf
i gave the tentlabs 3.3v shunt 7 volt as input.
As a tip from someone on another forum, I also placed an Elna Silmic capacitor in between.
https://www.tentlabs.com/Components/cdupgrade/shunt/assets/ShuntAppNoteAN04V02.pdf
@MathieuDoe
i wouldn't know what that stands for.
and i did hear an improvement, a bit like what is stated on the tentslabs website.
https://www.tentlabs.com/Components/cdupgrade/shunt/index.html
i wouldn't know what that stands for.
and i did hear an improvement, a bit like what is stated on the tentslabs website.
https://www.tentlabs.com/Components/cdupgrade/shunt/index.html
@gizmo3
@iancanada
Ok, answers were in the datasheet... It is a little bit clearer now (see below, I have highloghted the power supplies)
I have an external OSC with FifoPi, so I think that in my case I don't need to supply VCCA at all. I'll do some tests but any advice would be appreciated 😉
@iancanada
Ok, answers were in the datasheet... It is a little bit clearer now (see below, I have highloghted the power supplies)
I have an external OSC with FifoPi, so I think that in my case I don't need to supply VCCA at all. I'll do some tests but any advice would be appreciated 😉
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@NeoTheOne used for the 3.3v FifoPiQ7ll.
What I notice is that the cable used for the ucPure to Q7 makes a big difference. If you use a slightly poor quality cable, the sound degrades considerably.
What I notice is that the cable used for the ucPure to Q7 makes a big difference. If you use a slightly poor quality cable, the sound degrades considerably.