Well, the noise shows up on dsd64 with the new kernel where the old kernel was dead silent. So yes there is a software solution. New kernel allows higher speed rates (dsd128) and is the first of it’s kind so let’s allow it some room to grow!
bridge is limited to dsd64 too.
patrick said
Seems the clocks on RPI are not quality clocks like the one on Kali boards or HifiBerry DAC Pro+. So, will a software solution for the PI help regarding the Jitter?
[…] be right, the other minimal solution and known high in sound quality seems to be the Bridge
patrick said
@Minimalist Don't know if you could achieve equal or better results with other solutions. What is driving this quest (on my own) is it seems to bring the shortest path from the CPU to the DAC (USB circuitry is avoided), minimal hardware, minimal cable, etc...
That's great. And don't get me wrong, I fully agree and am looking to pursue something similar myself. I'm interested in a server more than a streamer, though, so would need to connect a hard drive. I'd just like to know if people are hearing an improvement over USB from the same source.
As an aside, one of my concerns with I2S is the HDMI connector itself; seems kind of flimsy for a solid connection.
Holzohr said
Oui. I have a pi2 with the Audio-GD module and a pi3 with the Audio-GD module and the HiFiBerry DAC+ Pro in-between. Thanks to the HAT DAC DSD128 is working without background noise.
I have read about this NMR module. Indeed very interesting. Strange that there is no feedback. Hope, Alexandre is ok.
Mario
@holzohr One more question that puzzled me. You use HifiBerry DAC+ Pro successfuly to play DSD128. The DAC+ Pro comes with 2 clocks one is 44.1/88.2/176.4 kHz the other one is 48/96/192 kHz. Through the AudioGD I2S/HDMI connector, are you passing a raw DSD i2S flow or a DoP I2S flow ? What is displayed on the DirectStream screen (frequency, DOP or not) ?
Actually, I thought that DSD128 un DoP mode would require a 384Khz (indeed in 24bits as it is the maximum of the DirectStream)…
EDIT: I finally got an email answer from Alexandre (Engineered) telling me he’s sorry for the late answer, he receives a huge quantity of emails. He says I can find the technical documentation on the website and he warns me on the necessity to adapt the voltage from 5V to 3.3V. He did not answered on the price!! So I sent a new email to thanks him and request the price again…
@holzohr One more question that puzzled me. You use HifiBerry DAC+ Pro successfuly to play DSD128. The DAC+ Pro comes with 2 clocks one is 44.1/88.2/176.4 kHz the other one is 48/96/192 kHz. Through the AudioGD I2S/HDMI connector, are you passing a raw DSD i2S flow or a DoP I2S flow ? What is displayed on the DirectStream screen (frequency, DOP or not) ?
Actually, I thought that DSD128 un DoP mode would require a 384Khz (indeed in 24bits as it is the maximum of the DirectStream)…
Salut Patrick,
I use the PiCorePlayer and have to set the DoP flag (-D) in its setting. The screen of the DS DAC shows DOP for DSD64/128. When I remove the DoP flag then the DS DAC gives out the DSD64 stream in 352kHz PCM. DSD128 playback is not possible without the DoP flag.
The most important at first, ist works with the I2S input from the DS DAC out of the box. The ASIO driver seems to be a bit tricky for some reason. Not sure if you can have more than one of these drivers on a Windows system? I already had installed the PS Audio ASIO driver for the DS DAC. Well I use the L.K.S bridge with the WASAPI driver. For now that seems to work. With Linux (USB output of my pi3) there was not any issue.
Playing with the HQPlayer Upsampling. I guess I have to update the firmware of the Amanero board for DSD512-ready but why should I (at the moment…)
holzohr Thanks for the details and congratulation for the new toy It go conversely to my philosophy (the less hardware and the more straight forward signal path) but if it sounds good. Seems the LKS is using Cristek oscillators like the one tested by Carletto with the NMR.
From my side I definitively switched to Roon, so given up JRiver and UPnP on RaspberryPI3. I’ve installed DietPi on the RPI and the result is ok. The NRM looks less interesting to me except if it was RoonReady… I’m tempted by the HifiBerry DAC+ Pro but the spec sounds to me not in conformance with Holzohr results.
DSD128 files in DoP on a limited 192Khz hardware with an I2S link. I surely missed something, but how do you achieve such result ?? Is there something wrong in the HifiBerry specifications or 192Khz is definitively sufficient to transport DoP on an I2S bus ??
patrick said
holzohr Thanks for the details and congratulation for the new toy :) It go conversely to my philosophy (the less hardware and the more straight forward signal path) but if it sounds good. Seems the LKS is using Cristek oscillators like the one tested by Carletto with the NMR.
I think the L.K.S is a nice alternative to the Singxer SU-1 especially because you can use a power suppy of your choice. Additionally, no need to fear the customs guys due the missing CE sign. The L.K.S was delivered within 4-5 days by DHL express!
I have placed it between my WHS 2012 nettop and the DS DAC. Stupid me, I have sold the SOtM sMS-200. One of the guys from the CA thread placed the L.K.S behind his sMS-200 and seems to be very happy with this chain.
Well, I still have to find out if the L.K.S makes sense compared to the USB input of the DS DAC I was using with and without the sMS-200 the last weeks. For now I think that I didn’t burn any money with the L.K.S. With the Gustard U12 I had here some months ago I was not happy at all. I had the feeling that it degrades the sound.
DSD128 files in DoP on a limited 192Khz hardware with an I2S link. I surely missed something, but how do you achieve such result ?? Is there something wrong in the HifiBerry specifications or 192Khz is definitively sufficient to transport DoP on an I2S bus ??
Hmm.. that reminds me the good old Squeezebox Touch a bit. Its built-in DAC is 96/24 capable but when you install the EDO app (Enhanced Digital Output) the SBT can give out 192/24 via its digital outputs to an external DAC. So, the HiFiBerry specs concern the built-in DAC not what it can pass on via I2S..(?)
It works very well, but I’m sure it is not the best. Indeed I’m making a brand new output module, with a FFC input connector, to make the path shorter.
looks like I should pay you a visit instead of the NMR guys ;o)
Have you tested if it worked with LMS? I know there is a DLNA plugin, just wondering how good it is and if it recognizes the NMR as client…
I wanted to design my own output module for a while, even found a company making prototype PCB for very cheap (www.easyeda.com) but just unable to use their tools to design the thing… The logical design is easy it’s the physical one I can’t get done…
il Carletto said
Connection between NMR and AudioGD output module is a bit challenging, because of the FFC/FPC connector on the NMR.
It works very well, but I’m sure it is not the best. Indeed I’m making a brand new output module, with a FFC input connector, to make the path shorter.
Linvincible said
Have you tested if it worked with LMS? I know there is a DLNA plugin, just wondering how good it is and if it recognizes the NMR as client...
Philippe's UPnP/DLNA-bridge plugin should work with it. You can try it out when you have any UPnP renderer in your system. For example the plugin works great with my Pioneer BDP-LX88. The only issue with renderers as the Pioneer is that topic 'gapless'.
Just found this, for the pi guys that are neither soldering quarter-gods Mano Music Streamer
Edit: Wow! They also offer the Holo Audio DACs. First time I see them in an European online shop. DSD512 via I²S. I am getting interested! On the other side I am just listening via my pi3 solution with this great great piCorePlayer… do I really need more? Well, curious I am yet.
Holzohr said
Just found this, for the pi guys that are neither soldering quarter-gods Mano Music Streamer
Edit: Wow! They also offer the Holo Audio DACs. First time I see them in an European online shop. DSD512 via I²S. I am getting interested! On the other side I am just listening via my pi3 solution with this great great piCorePlayer… do I really need more? Well, curious I am yet.
for that price, man the enclosure must be expensive! what they do is the same as a Pi + Kali or digi+ reclocker (except they use different clocks)
and they don’t provide IR remote capabilities
you can do that yourself without any soldering for a quarter of the price
I guess I have to update the firmware of the Amanero board for DSD512-ready but why should I (at the moment…)
It go conversely to my philosophy (the less hardware and the more straight forward signal path) but if it sounds good. Seems the LKS is using Cristek oscillators like the one tested by Carletto with the NMR.
Well, curious I am yet.