A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)

[smooth dancer]

I have ordered Accusilicon 338 clocks to replace the 318, which I’m using now. I don’t expect a big upgrade, but since the specs are a little bit better on the 338’s, who knows ?

Will report back, when they are up and running.

[alexanderbax]

Originally Posted by mbrennwa

Expect to be disappointed by the RPi direct I2S out, which has a pretty bad clock (it's not even a proper clock at all). A reclocker will fix this. Ians FiFo is great! It just works out of the box, and if used with good oscillators, the sound is very, very good!

Haha well based on my experience of the USB-out Im certainly not expecting anything great. The sound was so bad - it just lacked any life... plus there was popping all over the place.

That was my main concern about using the pi, even with the Fifopi and whether itll end up being a downgrade from my current HTPC which I built specifically as a transport via USB. But I would like to have the portability of the integrated streamer (and the pi will only be used as a renderer) so Im hoping the Fifopi and a clean PSU will at least equal my current HTPC USB out.

[Smartdriver]

Originally Posted by alexanderbax

.....Raspberry pi with FIFOpi attached (and Newclass D Neutron Star clock) .....

Very interested about this clock and how it will affect SQ, it is on my "todolist" as well
Are you buying 2 clocks or just one?

Cheers, Paulus

[alexanderbax]

Originally Posted by Smartdriver

Are you buying 2 clocks or just one?

Cheers, Paulus

Just the 1 for the higher frequencies and then just using Jriver to upsample everything to 192k (highest output of the Dirac Audio Processor). Cant justify buying 2 of them

[NIXIE62]

@alexanderbax, did you check the DC offset on the headphone amplifier at the output?

[alexanderbax]

I didnt bother in the end as everything is working fine. I had a minor issue with an Opamp which needed to be reseated as it had come loose in transit, but nothing to do with feeding it music from the DDDAC. Is it still worth doing? Ive probably listened to at least 15 hours on this set up now with no issues.

[michl2604]

Hi,

I have FIFO Pi Q3 in my system for quite some time now. I'm very pleased soundwise when a track is running, no pop / clicks, very clean and detailed sound, great soundstage.

But there is one issue I'm struggling with: When I start playing a new track or jumping to a new position within the same song, there is often one short (loud) click / pop. After that the track plays without issues with great sound. The click volume differs, sometimes it is quiet I can almost not hear it, but most of the times it is really loud and I'm afraid that my speaker get broken!?! Also the 'position' of the click moves: Most of the time on the left side, sometimes the click moves to the middle and right side of the soundstage. Really strange.

My chain is: RPI I2S -> FIFO PI Q3 -> DDDAC.
I'm running volumio, but I have also tested with moode. Same issue. Because I thouht this comes from EMI issues I have ordered a GPIO extension cable to get some space between RPI and FIFO PI. But did not help either.

With RPI USB -> WaveIO -> DDDAC I have no such issues, so I think my DDDAC, PSU and the rest of the chain is not the problem.

A test without FIFO PI (Only RPI) is pending (Maybe I have the time at weekend).

Do you have an idea? Someone with the same issues? I would really love to keep the FIFO PI in the system because sound is great when track is running, but the clicks in the beginning are driving me crazy...

[mbrennwa]

^ My Ian FiFo behaves very well, no such clicks. If the clicks are gone with I2S directly from the RPi without the reclocker, I'd think the issue is related to the reclocker. If you think the reclocker board is causing the issue, I'd suggest to get in touch with Ian.

[NIXIE62]

Originally Posted by alexanderbax

I didnt bother in the end as everything is working fine. I had a minor issue with an Opamp which needed to be reseated as it had come loose in transit, but nothing to do with feeding it music from the DDDAC. Is it still worth doing? Ive probably listened to at least 15 hours on this set up now with no issues.

It costs you nothing to check.

[Robin De Wolf]

Originally Posted by michl2604

Hi,



I have FIFO Pi Q3 in my system for quite some time now. I'm very pleased soundwise when a track is running, no pop / clicks, very clean and detailed sound, great soundstage.



But there is one issue I'm struggling with: When I start playing a new track or jumping to a new position within the same song, there is often one short (loud) click / pop. After that the track plays without issues with great sound. The click volume differs, sometimes it is quiet I can almost not hear it, but most of the times it is really loud and I'm afraid that my speaker get broken!?! Also the 'position' of the click moves: Most of the time on the left side, sometimes the click moves to the middle and right side of the soundstage. Really strange.



My chain is: RPI I2S -> FIFO PI Q3 -> DDDAC.

I'm running volumio, but I have also tested with moode. Same issue. Because I thouht this comes from EMI issues I have ordered a GPIO extension cable to get some space between RPI and FIFO PI. But did not help either.



With RPI USB -> WaveIO -> DDDAC I have no such issues, so I think my DDDAC, PSU and the rest of the chain is not the problem.



A test without FIFO PI (Only RPI) is pending (Maybe I have the time at weekend).



Do you have an idea? Someone with the same issues? I would really love to keep the FIFO PI in the system because sound is great when track is running, but the clicks in the beginning are driving me crazy...

I have the same behavior, using Fifopi as well. But I believe this was also the case with the Hifiberry I used before. I have not been able to narrow down when it does or does not happen. I notice it more now with high efficient horns (110db).